VW Fault Codes List: Your Guide to Diagnostic Insights and Solutions

by | Oct 6, 2023 | Fault Codes

vw fault codes list

Introduction

Volkswagen (VW) vehicles have long been known for their reliability, performance, and sleek design. However, like any complex machinery, VW cars and trucks are not immune to issues. To ensure their continued smooth operation and safety, it’s essential to understand and address potential problems. One of the key tools in this endeavor is the VW fault codes list.

*Please press the following to search through the VW fault codes list: CTRL+ F

VW Fault Codes List
Trouble Code Fault Location Probable Cause
P0171 System too lean, bank 1 Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector(s), HO2S
P0300 Random/multiple cylinder(s) -misfire detected Spark plug(s), HT lead(s), injector(s), ignition coil(s), low compression, wiring
P0301 Cylinder 1 -misfire detected Engine mechanical fault, wiring, ignition/fuel system, injector, ECT/MAF sensor, ECM
P0322 Crankshaft position (CKP) sensor/engine speed (RPM) sensor no signal CKP sensor, wiring
P0328 Knock sensor (KS) 1, bank 1 -high input Wiring short to positive, KS incorrectly tightened, KS, ECM
P0340 Camshaft position (CMP) sensor A, bank 1 circuit malfunction Wiring, CMP sensor, ECM
P0420 Catalytic converter system, bank 1 -efficiency below threshold Catalytic converter, wiring, HO2S
P1000 – P1099 (Fuel and air metering and auxiliary emission control)
P1004 Torque Difference Cylinder 1: Limit Value Exceeded
P1005 Torque Difference Cylinder 2: Limit Value Exceeded
P1006 Torque Difference Cylinder 3: Limit Value Exceeded
P1007 Torque Difference Cylinder 4: Limit Value Exceeded
P1009 Air Mass Meter 1/2 Implausible Signal From Load Detection Wiring, MAF sensor(s)
P1018 Intake Manifold Runner Bank 2 Lower Limit Not Reached
P1020 Fuel pressure – control limit exceeded Wiring, fuel pressure sensor, fuel pressure control valve, high pressure fuel pump
P1023 Fuel pressure control valve – short to ground Wiring short to ground, fuel pressure control valve
P1024 Fuel pressure control valve – open circuit Wiring open circuit, fuel pressure control valve
P1025 Fuel pressure control valve – mechanical fault Fuel pressure control valve
P1026 Intake manifold air control solenoid – short to positive Wiring short to positive, intake manifold air control solenoid
P1027 Intake manifold air control solenoid – short to ground Wiring short to ground, intake manifold air control solenoid
P1028 Intake manifold air control solenoid – open circuit Wiring open circuit, intake manifold air control solenoid
P1029 Intake manifold air control valve position sensor – upper limit not reached Air control flap tight/sticking, hose connection(s), intake manifold air control actuator
P1030 Intake manifold air control valve position sensor – lower limit not reached Air control flap tight/sticking, hose connection(s), intake manifold air control actuator
P1031 Intake manifold air control valve position sensor – specification not attained Air control flap tight/sticking, hose connection(s), intake manifold air control actuator, intake manifold air control solenoid
P1032 Nitrogen oxides (NOx) sensor – signal too high Catalytic converter, wiring short to positive, NOx sensor
P1033 Nitrogen oxides (NOx) sensor – signal too low Exhaust leak, wiring short to ground, NOx sensor
P1034 Nitrogen oxides (NOx) sensor – signal outside tolerance Catalytic converter, exhaust leak, wiring, NOx sensor
P1035 Nitrogen oxides (NOx) sensor – range/ performance problem Wiring, heating inoperative, NOx sensor
P1036 Nitrogen oxides (NOx) heater sensor – short to positive Wiring short to positive, NOx sensor
P1037 Nitrogen oxides (NOx) heater sensor – short to ground Wiring short to ground, NOx sensor
P1038 Nitrogen oxides (NOx) heater sensor – open circuit Wiring open circuit, NOx sensor
P1039 Injector 1, supply voltage – short circuit Wiring, injector
P1040 Injector 1, supply voltage – circuit malfunction Wiring, injector
P1041 Injector 2, supply voltage – short circuit Wiring, injector
P1042 Injector 2, supply voltage – circuit malfunction Wiring, injector
P1043 Injector 3, supply voltage – short circuit Wiring, injector
P1044 Injector 3, supply voltage – circuit malfunction Wiring, injector
P1045 Injector 4, supply voltage – short circuit Wiring, injector
P1046 Injector 4, supply voltage – circuit malfunction Wiring, injector
P1047 Camshaft position (CMP) actuator, exhaust – circuit malfunction Wiring, camshaft position (CMP) actuator
P1048 Camshaft position (CMP) actuator, exhaust – short to positive Wiring short to positive, camshaft position (CMP) actuator
P1049 Camshaft position (CMP) actuator, exhaust – short to ground Wiring short to ground, camshaft position (CMP) actuator
P1050 Camshaft position (CMP) actuator, exhaust – open circuit Wiring open circuit, camshaft position (CMP) actuator
P1055 Bank 1 Camshaft Adjustment Short To B+
P1056 Bank 1 Camshaft Adjustment Short To Ground
P1057 Bank 1 Camshaft Adjustment Short To Open Circuit
P1063 Fuel pressure – control limit not reached Air in fuel system, fuel leak, fuel lift pump, fuel bypass valve, fuel pressure control valve, high pressure fuel pump
P1064 Fuel pressure – mechanical fault Air in fuel system, fuel leak, fuel lift pump, fuel bypass valve, fuel pressure control valve, high pressure fuel pump
P1065 Fuel pressure – system deviation Air in fuel system, fuel leak, fuel lift pump, fuel bypass valve, fuel pressure control valve, high pressure fuel pump
P1066 Intake manifold air control solenoid – short to positive Wiring short to positive, intake manifold air control solenoid
P1067 Intake manifold air control solenoid – short to ground Wiring short to ground, intake manifold air control solenoid
P1068 Intake manifold air control solenoid – open circuit Wiring open circuit, intake manifold air control solenoid
P1069 Nitrogen oxides (NOx) sensor – heater control – short to ground Wiring short to ground, NOx sensor
P1070 Nitrogen oxides (NOx) sensor – heater control – short to positive Wiring short to positive, NOx sensor
P1071 Nitrogen oxides (NOx) sensor – heater control – incorrect signal Wiring, NOx sensor
P1072 Nitrogen oxides (NOx) sensor – heater control – circuit malfunction Wiring, NOx sensor
P1073 Mass Air Flow Sensor 2 Signal Too Small
P1074 Mass Air Flow Sensor 2 Signal Too Large
P1081 Exhaust Bank 3- Mixture Adaption Range 1 Lower Lean Limit Not Reached
P1082 Exhaust Bank 3- Mixture Adaption Range 2 Lower Lean Limit Not Reached
P1083 Exhaust Bank 3- Mixture Adaption Range 1 Lower Rich Limit Not Reached
P1084 Exhaust Bank 3- Mixture Adaption Range 2 Lower Rich Limit Not Reached
P1085 Exhaust Bank 4- Mixture Adaption Range 1 Lower Lean Limit Not Reached
P1086 Exhaust Bank 4- Mixture Adaption Range 2 Lower Lean Limit Not Reached
P1087 Exhaust Bank 4- Mixture Adaption Range 1 Lower Rich Limit Not Reached
P1088 Exhaust Bank 4- Mixture Adaption Range 2 Lower Rich Limit Not Reached
P1093 Mixture control (MC), malfunction Fuel pressure/pump, injector(s) intake leak
P1100 – P1199 (Fuel and air metering)
P1100 HO2S12 Sensor Circuit Voltage Too Low Air Leak
P1101 Heated oxygen sensor (HO2S) low voltage Intake/exhaust leak, fuel pressure/pump, wiring short to ground, HO2S
P1102 Heated oxygen sensor (HO2S) heater short to positive Wiring short to positive, HO2S
P1103 Heated oxygen sensor (HO2S) heater output too low Wiring, HO2S
P1104 HO2S12 Sensor Circuit Voltage Too Low Air Leak
P1105 Heated oxygen sensor (HO2S) heater short to positive Wiring short to positive, HO2S
P1106 Heated oxygen sensor (HO2S) low voltage/air leak Intake/exhaust leak, fuel pressure/pump, wiring short to ground, HO2S
P1107 Heated oxygen sensor (HO2S) heater short to positive Wiring short to positive, HO2S
P1109 HO2S22 Sensor Circuit Voltage Too Low Air Leak
P1110 Heated oxygen sensor (HO2S) heater short to positive Wiring short to positive, HO2S
P1111 Heated oxygen sensor (HO2S) control, system too lean Intake/exhaust leak, injector blocked, MAF sensor, fuel pressure/pump, HO2S
P1112 Heated oxygen sensor (HO2S) control, system too rich Excessive fuel in engine oil, injector leaking, fuel pressure, EVAP canister purge valve, MAF sensor, HO2S
P1113 Heated oxygen sensor (HO2S) heater resistance too high Wiring, HO2S
P1114 Heated oxygen sensor (HO2S) heater resistance too high Wiring, HO2S
P1115 Heated oxygen sensor (HO2S) heater short to ground Wiring short to ground, HO2S
P1116 Heated oxygen sensor (HO2S) heater open circuit Wiring open circuit, HO2S
P1117 Heated oxygen sensor (HO2S) heater short to ground Wiring short to ground, HO2S
P1118 Heated oxygen sensor (HO2S) heater open circuit Wiring open circuit, HO2S
P1119 Heated oxygen sensor (HO2S) heater short to ground Wiring short to ground, HO2S
P1120 Heated oxygen sensor (HO2S) heater open circuit Wiring open circuit, HO2S
P1121 Heated oxygen sensor (HO2S) heater short to ground Wiring short to ground, HO2S
P1122 Heated oxygen sensor (HO2S) heater open circuit Wiring open circuit, HO2S
P1123 Long Term Fuel Trim Adjustment Bank 1 System Too Rich
P1124 Long Term Fuel Trim Adjustment Bank 1 System Too Lean
P1125 Long Term Fuel Trim Adjustment Bank 2 System Too Rich
P1126 Long Term Fuel Trim Adjustment Bank 2 System Too Lean
P1127 Long term fuel trim, system too rich Fuel pressure, EVAP canister purge valve, injector(s)
P1128 Long term fuel trim, system too lean Fuel pressure/pump, injector(s), intake/ exhaust leak, AIR system, hose leak
P1129 Long term fuel trim, system too rich Fuel pressure, EVAP canister purge valve, injector(s)
P1130 Long term fuel trim, system too lean Fuel pressure/pump, injector(s), intake/ exhaust leak, AIR system, hose leak
P1131 HO2S21 Inner Resistance Too Large
P1132 Heated oxygen sensor (HO2S) heater control – circuit high Wiring short to positive, HO2S
P1133 Heated oxygen sensor (HO2S) heater control – circuit low Wiring open circuit/short to ground, HO2S
P1134 HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Short To B+
P1135 HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction
P1136 Long term fuel trim, idling, system too lean Fuel pressure/pump, injector(s), intake/ exhaust leak, AIR system, hose leak
P1137 Long term fuel trim, idling, system too rich Fuel pressure, injector(s), EVAP canister purge valve
P1138 Long term fuel trim, idling, system too lean Fuel pressure/pump, injector(s), intake/ exhaust leak, AIR system, hose leak
P1139 Long term fuel trim, idling, system too rich Fuel pressure, injector(s), EVAP canister purge valve
P1140 Heated oxygen sensor (HO2S) heater resistance too high Wiring, HO2S
P1141 Load calculation – implausible value Wiring, MAF sensor
P1142 Load calculation – too low Throttle control unit, MAF sensor, APP sensor
P1143 Load calculation – too high Throttle control unit, MAF sensor, APP sensor
P1144 Mass air flow (MAF) sensor – open circuit/ short to ground Wiring open circuit/short to ground, MAF sensor
P1145 Mass air flow (MAF) sensor – short to positive Wiring short to positive, MAF sensor
P1146 Mass air flow (MAF) sensor – supply voltage Operating voltage too high/low, wiring
P1147 Heated oxygen sensor lambda regulation, system too lean Intake leak, wiring, HO2S
P1148 Heated oxygen sensor lambda regulation, system too rich Exhaust leak, wiring, HO2S
P1149 Heated oxygen sensor (HO2S) implausible lambda control value Exhaust leak, wiring, HO2S
P1150 Heated oxygen sensor (HO2S) implausible lambda control value Exhaust leak, wiring, HO2S
P1151 Long term fuel trim below lean limit Fuel pressure/pump, injectors, intake/exhaust leak, HO2S
P1152 Long term fuel trim below lean limit Fuel pressure/pump, injectors, intake/exhaust leak, AIR system, HO2S
P1153 Heated oxygen sensor (HO2S) interchanged HO2S 2 on Bank 1 & 2 incorrectly installed
P1154 Manifold Switch Over Malfunction
P1155 Manifold absolute pressure (MAP) sensor – short to positive Wiring short to positive, MAP sensor
P1156 Manifold absolute pressure (MAP) sensor – open circuit/short to ground Wiring open circuit/short to ground, MAP sensor
P1157 Manifold absolute pressure (MAP) sensor – supply voltage Wiring, MAP sensor
P1158 Manifold absolute pressure (MAP) sensor – range/performance problem Wiring, hose connection(s), MAP sensor
P1159 Mass air flow (MAF) sensor, implausible ratio EGR system, intake leak, wiring, MAF sensor 1/2
P1160 Intake air temperature (IAT) sensor – short to ground Wiring short to ground, IAT sensor
P1161 Intake air temperature (IAT) sensor – open circuit/short to positive Wiring open circuit/short to positive, IAT sensor
P1162 Fuel temperature sensor – short to ground Wiring short to ground, fuel temperature sensor
P1163 Fuel temperature sensor – open circuit/short to positive Wiring open circuit/short to positive, fuel temperature sensor
P1164 Fuel temperature sensor – range/ performance problem Wiring, fuel temperature sensor
P1165 Long term fuel trim above rich limit Fuel pressure/pump, injectors, EVAP canister purge valve, EGR system, HO2S, intake/exhaust system
P1166 Long term fuel trim above rich limit Fuel pressure/pump, injectors, EVAP canister purge valve, EGR system, HO2S, intake/exhaust system
P1167 Mass Air Flow Sensor 2 Unplausible Signal
P1171 Throttle motor position sensor 2 – range/ performance problem Wiring, throttle valve tight/sticking, throttle motor position sensor
P1172 Throttle motor position sensor 2 – low input Wiring short to ground, throttle motor position sensor
P1173 Throttle motor position sensor 2 – high input Wiring short to positive, throttle motor position sensor
P1174 Fuel measurement system, injection timing incorrect Fuel pressure/pump, injector(s), intake/exhaust leak, EGR system, EVAP canister purge valve, HO2S
P1175 Pre-Injection Switched Off
P1176 Lambda correction after catalyst, control limit reached Intake leak, HO2S
P1177 Lambda correction after catalyst, control limit reached Intake leak, HO2S
P1178 Heated oxygen sensor (HO2S) pump current – open circuit Wiring open circuit, HO2S
P1179 Heated oxygen sensor (HO2S) pump current – short to ground Wiring short to ground, HO2S
P1180 Heated oxygen sensor (HO2S) pump current – short to positive Wiring short to positive, HO2S
P1181 Heated oxygen sensor (HO2S) reference voltage – open circuit Wiring open circuit, HO2S, HT leads, spark plugs, misfire detection
P1182 Heated oxygen sensor (HO2S) reference voltage – short to ground Wiring short to ground, HO2S, HT leads, spark plugs, misfire detection
P1183 Heated oxygen sensor (HO2S) reference voltage – short to positive Wiring short to positive, HO2S, HT leads, spark plugs, misfire detection
P1184 Linear Oxygen Sensor Common Ground Open Circuit
P1185 Linear Oxygen Sensor Common Ground Short To Ground
P1186 Linear Oxygen Sensor Common Ground Short To Positive
P1187 Heated oxygen sensor (HO2S) circuit malfunction Wiring, HO2S
P1188 Linear O2 Sensor Compensation Resistor Short to Ground
P1189 Linear O2 Sensor Compensation Resistor Short to B+
P1190 Heated oxygen sensor (HO2S) reference voltage – range/performance problem Wiring, HO2S, HT leads, spark plugs, misfire detection
P1191 Heated oxygen sensor (HO2S) interchanged HO2S 1 on Bank 1 & 2 incorrectly installed
P1192 Fuel pressure sensor – supply voltage Wiring, fuel pressure sensor
P1193 Fuel pressure sensor – open circuit/short to positive Wiring open circuit/short to positive
P1194 Fuel pressure control valve – short to positive Wiring short to positive, fuel pressure control valve
P1196 Heated oxygen sensor (HO2S) heater circuit malfunction Wiring, HO2S
P1197 Heated oxygen sensor (HO2S) heater circuit malfunction Wiring, HO2S
P1198 Heated oxygen sensor (HO2S) heater circuit malfunction Wiring, HO2S
P1199 Heated oxygen sensor (HO2S) heater circuit malfunction Wiring, HO2S
P1200 – P1299 (Fuel and air metering – injector circuit)
P1200 Turbocharger Recirculating Valve Mechanical Malfunction
P1201 Injector 1 – circuit malfunction Wiring, injector
P1202 Injector 2 – circuit malfunction Wiring, injector
P1203 Injector 3 – circuit malfunction Wiring, injector
P1204 Injector 4 – circuit malfunction Wiring, injector
P1205 Injector 5 – circuit malfunction Wiring, injector
P1206 Injector 6 – circuit malfunction Wiring, injector
P1207 Fuel Injector Circuit Cylinder 7 Electrical Malfunction
P1208 Fuel Injector Circuit Cylinder 8 Electrical Malfunction
P1209 Intake Valves For Cylinder Shut Off Short Circuit To Ground
P1210 Intake Valves For Cylinder Shut Off Short to B+
P1211 Intake Valves For Cylinder Shut Off Open Circuit
P1213 Injector 1 – short to positive Wiring short to positive, injector
P1214 Injector 2 – short to positive Wiring short to positive, injector
P1215 Injector 3 – short to positive Wiring short to positive, injector
P1216 Injector 4 – short to positive Wiring short to positive, injector
P1217 Injector 5 – short to positive Wiring short to positive, injector
P1218 Injector 6 – short to positive Wiring short to positive, injector
P1219 Injector Circuit Cylinder 7 Short To Positive
P1220 Injector Circuit Cylinder 8 Short To Positive
P1221 Cylinder Shut Off Exhaust Valves Short Circuit To Ground
P1222 Cylinder Shut Off Exhaust Valves Short To B+
P1223 Cylinder Shut Off Exhaust Valves Open Circuit
P1225 Injector 1 – short to ground Wiring short to ground, injector
P1226 Injector 2 – short to ground Wiring short to ground, injector
P1227 Injector 3 – short to ground Wiring short to ground, injector
P1228 Injector 4 – short to ground Wiring short to ground, injector
P1229 Injector 5 – short to ground Wiring short to ground, injector
P1230 Injector 6 – short to ground Wiring short to ground, injector
P1231 Injector Circuit Cylinder 7 Short To Ground
P1232 Injector Circuit Cylinder 8 Short To Ground
P1237 Injector 1 – open circuit Wiring open circuit, injector
P1238 Injector 2 – open circuit Wiring open circuit, injector
P1239 Injector 3 – open circuit Wiring open circuit, injector
P1240 Injector 4 – open circuit Wiring open circuit, injector
P1241 Injector 5 – open circuit Wiring open circuit, injector
P1242 Injector 6 – open circuit Wiring open circuit, injector
P1243 Injector Circuit Open Cylinder 7
P1244 Injector Circuit Open Cylinder 8
P1245 Injector needle lift sensor – short to ground Wiring short to ground, injector needle lift sensor
P1246 Injector needle lift sensor – range/ performance problem Injector needle lift sensor, injector pipe defective, fuel level low
P1247 Injector needle lift sensor – open circuit/ short to positive Wiring open circuit/short to positive, injector needle lift sensor
P1248 Start of injection – control difference Fuel injection timing solenoid, injector needle lift sensor, fuel level low, pump timing
P1249 Fuel Consumption Signal Electrical Fault In Circuit
P1250 Fuel tank level sensor – low input Fuel level too low
P1251 Fuel injection timing solenoid – short to positive Wiring short to positive
P1252 Fuel injection timing solenoid – open circuit/ short to ground Wiring open circuit/short to ground, fuel injection timing solenoid
P1253 Instrument panel, fuel consumption signal – short to ground Wiring short to ground, instrument panel
P1254 Instrument panel, fuel consumption signal – short to positive Wiring short to positive, instrument panel
P1255 Engine coolant temperature (ECT) sensor – short to ground Wiring short to ground, ECT sensor
P1256 Engine coolant temperature (ECT) sensor – open circuit/short to positive Wiring open circuit/short to positive, ECT sensor
P1257 Engine Coolant System Valve Open
P1258 Engine Coolant System Valve Short To B+
P1259 Engine Coolant System Valve Short To Ground
P1260 Injector 1 – implausible signal No control
P1261 Injector 1 – control limit exceeded Control period too long, wiring, injector
P1262 Injector 1 – control limit not reached Control period too short, fuel level low, air in fuel system
P1263 Injector 2 – implausible signal No control
P1264 Injector 2 – control limit exceeded Control period too long, wiring, injector
P1265 Injector 2 – control limit not reached Control period too short, fuel level low, air in fuel system
P1266 Injector 3 – implausible signal No control
P1267 Injector 3 – control limit exceeded Control period too long, wiring, injector
P1268 Injector 3 – control limit not reached Control period too short, fuel level low, air in fuel system
P1269 Injector 4 – implausible signal No control
P1270 Injector 4 – control limit exceeded Control period too long, wiring, injector
P1271 Injector 4 – control limit not reached Control period too short, fuel level low, air in fuel system
P1278 Fuel metering solenoid – short to positive Wiring short to positive, fuel metering solenoid
P1279 Fuel metering solenoid – open circuit/short to ground Wiring open circuit/short to ground, fuel metering solenoid
P1280 Fuel Injection Air Control Valve Circuit Flow Too Low
P1281 Fuel metering solenoid – short to ground Wiring short to ground, fuel metering solenoid
P1282 Fuel metering solenoid – open circuit Wiring open circuit, fuel metering solenoid
P1284 Fuel Injection Air Control Valve Circuit Open
P1285 Fuel Injection Air Control Valve Circuit Short To Ground
P1286 Fuel Injection Air Control Valve Circuit Short To B+
P1287 Turbocharger (TC) bypass valve – open circuit Wiring open circuit, TC bypass valve
P1288 Turbocharger (TC) bypass valve – short to positive Wiring short to positive, TC bypass valve
P1289 Turbocharger (TC) bypass valve – short to ground Wiring short to ground, TC bypass valve
P1290 Engine coolant temperature (ECT) sensor, ECM controlled cooling system – high input Wiring, ECT sensor
P1291 Engine coolant temperature (ECT) sensor, ECM controlled cooling system – high input Wiring, ECT sensor
P1292 Engine coolant thermostat – open circuit Wiring open circuit, engine coolant thermostat
P1293 Engine coolant thermostat – short to positive Wiring short to positive, engine coolant thermostat
P1294 Engine coolant thermostat – short to ground Wiring short to ground, engine coolant thermostat
P1295 Turbocharger (TC), bypass – flow malfunction TC wastegate regulating valve, hose connection(s), injector
P1296 Engine cooling system – malfunction ECT sensor, coolant thermostat
P1297 Turbocharger (TC)/throttle valve, hose connection – pressure loss Hose connection
P1299 Fuel metering solenoid – circuit malfunction Wiring, fuel metering solenoid
P1300 – P1399 (Ignition system or misfire)
P1300 Random/multiple cylinder(s) – misfire detected Fuel level low, fuel gauge tank sensor
P1319 Knock Sensor 1 Circuit Short To Ground
P1320 Knock Sensor 2 Circuit Short To Ground
P1321 Knock Sensor 3 Signal Too Low
P1322 Knock Sensor 3 Signal Too High
P1323 Knock Sensor 4 Signal Too Low
P1324 Knock Sensor 4 Signal Too Low
P1325 Knock control, cylinder 1 – control limit reached Poor quality fuel, incorrect fuel, insecure engine component, KS incorrectly tightened/defective, shield wiring open circuit, poor connection
P1326 Knock control, cylinder 2 – control limit reached Poor quality fuel, incorrect fuel, insecure engine component, KS incorrectly tightened/defective, shield wiring open circuit, poor connection
P1327 Knock control, cylinder 3 – control limit reached Poor quality fuel, incorrect fuel, insecure engine component, KS incorrectly tightened/defective, shield wiring open circuit, poor connection
P1328 Knock control, cylinder 4 – control limit reached Poor quality fuel, incorrect fuel, insecure engine component, KS incorrectly tightened/defective, shield wiring open circuit, poor connection
P1329 Knock control, cylinder 5 – control limit reached Poor quality fuel, incorrect fuel, insecure engine component, KS incorrectly tightened/defective, shield wiring open circuit, poor connection
P1330 Knock control, cylinder 6 – control limit reached Poor quality fuel, incorrect fuel, insecure engine component, KS incorrectly tightened/defective, shield wiring open circuit, poor connection
P1331 Cylinder 7 Knock Control Limit Attained
P1332 Cylinder 8 Knock Control Limit Attained
P1335 Engine torque control – limit reached Throttle control unit, hose(s), TC system, MAP sensor, IAT sensor, MAF sensor, ECT sensor
P1336 Engine torque monitoring – control limit exceeded Hose(s), TC system, throttle control unit, IAT sensor, MAP sensor, MAF sensor, ECT sensor, APP sensor
P1337 Camshaft position (CMP) sensor, short to ground Wiring short to ground, CMP sensor
P1338 Camshaft position (CMP) sensor, open circuit/short to positive Wiring open circuit/short to positive, CMP sensor
P1339 Crankshaft position (CKP) sensor/engine speed (RPM) sensor – interchanged Multi-plugs incorrectly connected
P1340 Camshaft position (CMP) crankshaft position (CKP) sensor – out of sequence Valve timing, CKP/CMP sensor installation, CKP sensor rotor
P1341 Ignition amplifier, primary circuit 1 – short to ground Wiring short to ground, ignition amplifier, CMP sensor, HT leads, spark plugs
P1342 Ignition amplifier, primary circuit 1 – short to positive Wiring short to positive, ignition amplifier, CMP sensor, HT leads, spark plugs
P1343 Ignition amplifier, primary circuit 2 – short to ground Wiring short to ground, ignition amplifier, CMP sensor, HT leads, spark plugs
P1344 Ignition amplifier, primary circuit 2 – short to positive Wiring short to positive, ignition amplifier, CMP sensor, HT leads, spark plugs
P1345 Ignition amplifier, primary circuit 3 – short to ground Wiring short to ground, ignition amplifier, CMP sensor, HT leads, spark plugs
P1346 Ignition amplifier, primary circuit 3 – short to positive Wiring short to positive, ignition amplifier, CMP sensor, HT leads, spark plugs
P1347 Camshaft position (CMP) crankshaft position (CKP) sensor – out of sequence Valve timing, CKP/CMP sensor installation, CKP sensor rotor
P1348 Ignition amplifier, primary circuit 1 – open circuit Wiring short to ground, ignition amplifier, CMP sensor, HT leads, spark plugs
P1349 Ignition amplifier, primary circuit 2 – open circuit Wiring short to positive, ignition amplifier, CMP sensor, HT leads, spark plugs
P1350 Ignition amplifier, primary circuit 3 – open circuit Wiring short to positive, ignition amplifier, CMP sensor, HT leads, spark plugs
P1351 Camshaft position (CMP) sensor, range/performance problem Ignore trouble code, erase fault memory
P1354 Fuel quantity adjuster position sensor Wiring, fuel injection pump
P1355 Ignition coil/amplifier, cylinder 1 – open circuit Wiring open circuit, ignition coil/amplifier
P1356 Ignition coil/amplifier, cylinder 1 – short to positive Wiring short to positive, ignition coil/ amplifier
P1357 Ignition coil/amplifier, cylinder 1 – short to ground Wiring short to ground, ignition coil/ amplifier
P1358 Ignition coil/amplifier, cylinder 2 – open circuit Wiring open circuit, ignition coil/amplifier
P1359 Ignition coil/amplifier, cylinder 2 – short to positive Wiring short to positive, ignition coil/ amplifier
P1360 Ignition coil/amplifier, cylinder 2 – short to ground Wiring short to ground, ignition coil/ amplifier
P1361 Ignition coil/amplifier, cylinder 3 – open circuit Wiring open circuit, ignition coil/amplifier
P1362 Ignition coil/amplifier, cylinder 3 – short to positive Wiring short to positive, ignition coil/ amplifier
P1363 Ignition coil/amplifier, cylinder 3 – short to ground Wiring short to ground, ignition coil/ amplifier
P1364 Ignition coil/amplifier, cylinder 4 – open circuit Wiring open circuit, ignition coil/amplifier
P1365 Ignition coil/amplifier, cylinder 4 – short to positive Wiring short to positive, ignition coil/ amplifier
P1366 Ignition coil/amplifier, cylinder 4 – short to ground Wiring short to ground, ignition coil/ amplifier
P1367 Ignition coil/amplifier, cylinder 5 – open circuit Wiring open circuit, ignition coil/amplifier
P1368 Ignition coil/amplifier, cylinder 5 – short to positive Wiring short to positive, ignition coil/ amplifier
P1369 Ignition coil/amplifier, cylinder 5 – short to ground Wiring short to ground, ignition coil/ amplifier
P1370 Ignition coil/amplifier, cylinder 6 – open circuit Wiring open circuit, ignition coil/amplifier
P1371 Ignition coil/amplifier, cylinder 6 – short to positive Wiring short to positive, ignition coil/ amplifier
P1372 Ignition coil/amplifier, cylinder 6 – short to ground Wiring short to ground, ignition coil/ amplifier
P1373 Cylinder 7 Ignition Circuit Open
P1374 Cylinder 7 Ignition Circuit Short To B+
P1375 Cylinder 7 Ignition Circuit Short To Ground
P1376 Cylinder 8 Ignition Circuit Open
P1377 Cylinder 8 Ignition Circuit Short To B+
P1378 Cylinder 8 Ignition Circuit Short To Ground
P1385 Engine control module (ECM) – defective ECM
P1386 Engine control module (ECM), knock control – defective ECM
P1387 Engine control module (ECM), BARO sensor – defective ECM
P1388 Engine control module (ECM), ETS – defective ECM
P1389 Engine Control Module 2 Defective
P1391 Camshaft position (CMP) short to ground Wiring short to ground, CMP sensor
P1392 Camshaft position (CMP) open circuit/short to positive Wiring open circuit/short to positive, CMP sensor
P1393 Ignition amplifier, primary circuit 1 – circuit malfunction Wiring, ignition amplifier, HT leads, spark plugs
P1394 Ignition amplifier, primary circuit 2 – circuit malfunction Wiring, ignition amplifier, HT leads, spark plugs
P1395 Ignition amplifier, primary circuit 3 – circuit malfunction Wiring, ignition amplifier, HT leads, spark plugs
P1396 Engine Speed Sensor Missing Tooth
P1397 Crankshaft position (CKP) sensor/engine speed (RPM) sensor – control limit reached Insecure/damaged rotor, CKP/RPM sensor
P1398 Crankshaft position (CKP) sensor/engine speed (RPM) sensor – short to ground Wiring short to ground, CKP/RPM sensor
P1399 Crankshaft position (CKP) sensor/engine speed (RPM) sensor – short to positive Wiring short to positive, CKP/RPM sensor
P1400 – P1499 (Emission control)
P1400 Exhaust gas recirculation (EGR) valve/ solenoid, circuit malfunction Wiring, EGR valve
P1401 Exhaust gas recirculation (EGR) valve/ solenoid, short to ground Wiring short to ground, EGR valve
P1402 Exhaust gas recirculation (EGR) valve/ solenoid, short to positive Wiring short to positive, EGR valve/solenoid
P1403 Exhaust gas recirculation (EGR) system – control difference Basic setting not carried out, EGR system
P1404 Exhaust gas recirculation (EGR) system – basic setting Basic setting not carried out, EGR system
P1406 EGR Temperature Sensor Signal Range Performance
P1407 Exhaust gas recirculation temperature (EGRT) sensor – low input Wiring short to ground, EGRT sensor
P1408 Exhaust gas recirculation temperature (EGRT) sensor – high input Wiring short to positive, ground wire defective, EGRT sensor
P1409 Evaporative emission (EVAP) canister purge valve – circuit malfunction Wiring, EVAP canister purge valve
P1410 Evaporative emission (EVAP) canister purge valve – short to positive Wiring short to positive, EVAP canister purge valve
P1411 Secondary air injection (AIR) system, insufficient flow detected Intake leak, hose(s) blocked/leaking, AIR valve/solenoid
P1412 EGR Differential Pressure Sensor Signal Too Low
P1413 EGR Differential Pressure Sensor Signal Too High
P1414 Secondary air injection (AIR) system, leak detected Intake leak, hose(s) leaking, AIR valve/solenoid
P1415 Exhaust gas recirculation (EGR) valve position sensor – lower limit exceeded Basic setting not carried out
P1416 Exhaust gas recirculation (EGR) valve position sensor – upper limit exceeded Basic setting not carried out
P1417 Fuel Level Sensor Circuit Signal Too Low
P1418 Fuel Level Sensor Circuit Signal Too High
P1420 Secondary air injection (AIR) valve/ solenoid – circuit malfunction Wiring, AIR solenoid
P1421 Secondary air injection (AIR) valve/ solenoid – short to ground Wiring short to ground, AIR valve/solenoid
P1422 Secondary air injection (AIR) valve/ solenoid – short to positive Wiring short to positive, AIR valve/solenoid
P1423 Secondary air injection (AIR) system, insufficient flow detected Hose connection(s), AIR valve/solenoid
P1424 Secondary air injection (AIR) system, leak detected AIR valve, exhaust leak
P1425 Evaporative emission (EVAP) canister purge valve – short to ground Wiring short to ground, EVAP canister purge valve
P1426 Evaporative emission (EVAP) canister purge valve – open circuit Wiring open circuit, EVAP canister purge valve
P1427 Vacuum pump, brakes – short to positive Wiring short to positive, vacuum pump
P1428 Vacuum pump, brakes – short to ground Wiring short to ground, vacuum pump
P1429 Vacuum pump, brakes – open circuit Wiring open circuit, vacuum pump
P1430 Vacuum pump, brakes – open circuit/short to positive Wiring open circuit/short to positive, vacuum pump
P1431 Vacuum pump, brakes – open circuit/short to ground Wiring open circuit/short to ground, vacuum pump
P1432 Secondary air injection (AIR) valve/ solenoid – open circuit Wiring open circuit, fuse, AIR valve/solenoid
P1433 Secondary air injection (AIR) pump relay – open circuit Wiring open circuit, fuse, AIR pump relay
P1434 Secondary air injection (AIR) pump relay – short to positive Wiring short to positive, AIR pump relay
P1435 Secondary air injection (AIR) pump relay – short to ground Wiring short to ground, AIR pump relay
P1436 Secondary air injection (AIR) pump relay – circuit malfunction Wiring, AIR pump relay
P1437 Exhaust gas recirculation (EGR) valve/ solenoid, short to positive Wiring short to positive, EGR valve/solenoid
P1438 Exhaust gas recirculation (EGR) valve/ solenoid, open circuit/short to ground Wiring open circuit/short to ground, EGR valve/solenoid
P1439 Exhaust gas recirculation (EGR) valve position sensor – basic setting Basic setting not carried out, EGR system
P1440 Exhaust gas recirculation (EGR) valve – open circuit Wiring open circuit, EGR valve
P1441 Exhaust gas recirculation (EGR) valve/ solenoid, open circuit/short to ground Wiring open circuit/short to ground, EGR solenoid
P1442 Exhaust gas recirculation (EGR) valve position sensor – high input Wiring short to positive, EGR valve position sensor
P1443 Exhaust gas recirculation (EGR) valve position sensor – low input Wiring short to ground, EGR valve position sensor
P1444 Exhaust gas recirculation (EGR) valve position sensor – range/performance problem Wiring, EGR valve position sensor
P1445 Catalyst Temperature Sensor 2 Circuit Range/Performance
P1446 Catalyst Temperature Circuit Short To Ground
P1447 Catalyst Temperature Circuit Open/Short to B+
P1448 Catalyst Temperature Sensor 2 Circuit Short to Ground
P1449 Catalyst Temperature Sensor 2 Circuit Open/Short to B+
P1450 Secondary air injection (AIR) system – short to positive Wiring short to positive, AIR relay
P1451 Secondary air injection (AIR) system – short to ground Wiring short to ground, AIR relay
P1452 Secondary air injection (AIR) system – open circuit Wiring open circuit, AIR relay
P1453 Exhaust gas recirculation temperature (EGRT) open circuit/short to positive Wiring open circuit/short to positive, EGRT sensor
P1454 Exhaust gas recirculation temperature (EGRT) short to ground Wiring short to ground, EGRT sensor
P1455 Exhaust gas recirculation temperature (EGRT) range/performance problem Exhaust leak, wiring, EGRT sensor
P1456 Exhaust gas recirculation temperature (EGRT) control, control limit reached EGRT sensor
P1457 Exhaust gas recirculation temperature (EGRT) open circuit/short to positive Wiring open circuit/short to positive, EGRT sensor
P1458 Exhaust gas recirculation temperature (EGRT) short to ground Wiring short to ground, EGRT sensor
P1459 Exhaust gas recirculation temperature (EGRT) range/performance problem Exhaust leak, wiring, EGRT sensor
P1460 Exhaust gas recirculation temperature (EGRT) control, control limit reached EGRT sensor
P1461 Exhaust gas recirculation temperature (EGRT) control, range/ performance problem Exhaust leak/blockage, EGRT sensor
P1462 Exhaust gas recirculation temperature (EGRT) control, range/ performance problem Exhaust leak/blockage, EGRT sensor
P1465 Additive Pump Short Circuit to B+
P1466 Additive Pump Open/Short to Ground
P1467 EVAP Canister Purge Solenoid Valve Short Circuit to B+
P1468 EVAP Canister Purge Solenoid Valve Short Circuit to Ground
P1469 EVAP Canister Purge Solenoid Valve Open Circuit
P1470 EVAP Control System LDP Circuit Electrical Malfunction
P1471 EVAP Control System LDP Circuit Short to Positive
P1472 EVAP Control System LDP Circuit Short To Ground
P1473 EVAP Control System LDP Open Circuit
P1474 EVAP Canister Purge Solenoid Valve Electrical Malfunction
P1475 EVAP Control System LDP Malfunction/Signal Circuit Open
P1476 EVAP Control System LDP Malfunction/Insufficient Vacuum
P1477 EVAP Control System LDP Malfunction
P1478 EVAP Control System LDP Clamped Tube Detected
P1479 Vacuum system, brakes – mechanical fault Vacuum pump
P1482 Secondary Air Injection Pump Relay 2 Short To B+
P1483 Secondary Air Injection Pump Relay 2 Short To Ground
P1484 Secondary Air Injection Pump Relay 2 Electrical Circuit Malfunction
P1489 EVAP Canister Purge Regulator Valve 2 Short To B+
P1490 EVAP Canister Purge Regulator Valve 2 Short To Ground
P1491 EVAP Canister Purge Regulator Valve 2 Open Circuit
P1493 Low Pressure Pump For Brake Power Too Low
P1497 Secondary Air System Bank 3 Flow Fault
P1498 Secondary Air System Bank 4 Flow Fault
P1500 – P1599 (Vehicle or idle speed control)
P1500 Fuel pump relay – circuit malfunction Wiring, fuel pump relay
P1501 Fuel pump relay – short to ground Wiring short to ground, fuel pump relay
P1502 Fuel pump relay – short to positive Wiring short to positive, fuel pump relay
P1503 Alternator load signal Wiring, alternator
P1504 Intake system – leak detected Intake leak, EGR system, EVAP system, hose connection(s), throttle control unit
P1505 Closed throttle position (CTP) switch – does not close Throttle cable/valve, wiring open circuit/ short to positive, CTP switch adjustment/ defective, ECM
P1506 Closed throttle position (CTP) switch – does not open Moisture ingress, wiring short to ground, CTP switch adjustment/defective, ECM
P1507 Idle speed control (ISC) – lower limit reached Throttle control unit/basic setting, intake/exhaust leak, mechanical fault, AC signals
P1508 Idle speed control (ISC) – upper limit reached Throttle control unit/basic setting, intake/exhaust leak, mechanical fault, AC signals
P1509 Idle air control (IAC) valve – circuit malfunction Wiring, IAC valve
P1510 Idle air control (IAC) valve – short to positive Wiring open circuit/short to ground, IAC valve
P1511 Intake manifold air control solenoid 1 – current circuit Wiring, intake manifold air control solenoid
P1512 Intake manifold air control solenoid 1 – short to positive Wiring short to positive, intake manifold air control solenoid
P1513 Intake manifold air control solenoid 2 – short to positive Wiring short to positive, intake manifold air control solenoid
P1514 Intake manifold air control solenoid 2 – short to ground Wiring short to ground, intake manifold air control solenoid
P1515 Intake manifold air control solenoid 1 – short to ground Wiring short to ground, intake manifold air control solenoid
P1516 Intake manifold air control solenoid 1 – open circuit Wiring open circuit, intake manifold air control solenoid
P1517 Engine control relay – circuit malfunction Wiring, engine control relay
P1518 Engine control relay – short to positive Wiring short to positive, engine control relay
P1519 Camshaft position (CMP) control, malfunction Cylinder head oil pressure too low, CMP actuator sticking/defective
P1520 Intake manifold air control solenoid 2 – open circuit Wiring open circuit, intake manifold air control solenoid
P1521 Intake Manifold Changeover Valve 2 Circuit Electrical Malfunction
P1522 Camshaft position (CMP) control, malfunction Cylinder head oil pressure too low, CMP actuator sticking/defective
P1523 SRS crash signal received Airbag triggered
P1524 Fuel pump relay – open circuit/short to ground Wiring open circuit/short to ground, fuel pump relay
P1525 Camshaft position (CMP) actuator, circuit malfunction Wiring, CMP actuator
P1526 Camshaft position (CMP) actuator, short to positive Wiring short to positive, CMP actuator
P1527 Camshaft position (CMP) actuator, short to ground Wiring short to ground, CMP actuator
P1528 Camshaft position (CMP) actuator, open circuit Wiring open circuit, CMP actuator
P1529 Camshaft position (CMP) actuator – short to positive Wiring short to positive, CMP actuator
P1530 Camshaft position (CMP) actuator – short to ground Wiring short to ground, CMP actuator
P1531 Camshaft position (CMP) actuator – open circuit Wiring open circuit, CMP actuator
P1532 Idle control – lean running speed below specification Throttle control unit
P1533 Camshaft position (CMP) actuator, circuit malfunction Wiring, CMP actuator
P1534 Camshaft position (CMP) actuator, short to positive Wiring short to positive, CMP actuator
P1535 Camshaft position (CMP) actuator, short to ground Wiring short to ground, CMP actuator
P1536 Camshaft position (CMP) actuator, open circuit Wiring open circuit, CMP actuator
P1537 Fuel shut-off solenoid – malfunction Fuel shut-off solenoid (leaking/sticking)
P1538 Fuel shut-off solenoid – open circuit/short to ground Wiring open circuit/short to ground, fuel shut-off solenoid
P1539 Clutch pedal position (CPP) switch – range/ performance problem Wiring, CPP switch
P1540 Vehicle speed signal – high input Excessive vehicle speed, instrument panel defective
P1541 Fuel pump relay – open circuit Wiring open circuit, fuel pump relay
P1542 Throttle motor position range/ performance problem Throttle valve requires cleaning, wiring, throttle motor position sensor
P1543 Throttle motor position low input Wiring short to ground, throttle motor position sensor
P1544 Throttle motor position high input Wiring short to positive, throttle motor position sensor
P1545 Throttle valve control – malfunction Throttle valve tight/sticking, wiring, throttle control unit
P1546 Turbocharger (TC) wastegate regulating valve – short to positive Wiring short to positive, TC wastegate regulating valve
P1547 Turbocharger (TC) wastegate regulating valve – short to ground Wiring short to ground, TC wastegate regulating valve
P1548 Turbocharger (TC) wastegate regulating valve – open circuit Wiring open circuit, TC wastegate regulating valve
P1549 Turbocharger (TC) wastegate regulating valve – open circuit/short to ground Wiring open circuit/short to ground, TC wastegate regulating valve
P1550 Turbocharger (TC) pressure – control difference Intake/exhaust leak, hoses interchanged/ not connected, MAP sensor, TC wastegate regulating valve, turbocharger (TC) wastegate actuator, TC
P1551 Barometric Pressure Sensor Circuit Short to B+
P1552 Barometric Pressure Sensor Circuit Open/Short to Ground
P1553 Manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensor – range/performance problem Intake/exhaust leak, EGR system, EVAP canister purge valve, throttle control unit, wiring, MAP sensor, BARO sensor
P1554 Throttle control unit – basic setting conditions Basic setting conditions not met
P1555 Turbocharger (TC) pressure – upper limit exceeded Hoses interchanged/not connected, TC wastegate regulating valve, turbocharger (TC) wastegate actuator, TC
P1556 Turbocharger (TC) pressure – control limit not reached TC wastegate regulating valve, intake leak, TC defective
P1557 Turbocharger (TC) pressure – control limit exceeded Hose connection interchanged/not connected
P1558 Idle speed control (ISC) actuator/throttle motor – circuit malfunction Wiring, ISC actuator/throttle motor
P1559 Throttle control unit – basic setting malfunction Accelerator pedal or starter motor operated during basic setting
P1560 Maximum engine RPM exceeded Incorrect gear shift, wiring open circuit, CKP/RPM sensor
P1561 Fuel quantity adjuster – control difference Wiring, fuel injection pump
P1562 Fuel quantity adjuster – upper stop value Fuel quantity adjuster blocked/defective, stop value reached
P1563 Fuel quantity adjuster – lower stop value Fuel quantity adjuster blocked/defective, stop value reached
P1564 Throttle control unit – voltage low during basic setting Battery, wiring
P1565 Throttle control unit – lower stop not reached Throttle valve tight/sticking, ISC actuator
P1566 AC compressor, load signal – implausible signal Wiring, AC system
P1567 Load Signal from A/C Compressor No Signal
P1568 Throttle control unit – mechanical fault Throttle valve tight/sticking
P1569 Cruise control master switch Wiring, cruise control master switch
P1570 Engine control module (ECM) – immobilizer active Incorrect/damaged key, incorrectly coded, ECM/immobilizer replacement without coding, wiring, immobilizer defective
P1571 Engine mounting control solenoid, short to positive Wiring short to positive, engine mounting control solenoid
P1572 Engine mounting control solenoid, short to ground Wiring short to ground, engine mounting control solenoid
P1573 Engine mounting control solenoid, open circuit Wiring open circuit, engine mounting control solenoid
P1575 Engine mounting control solenoid, short to positive Wiring short to positive, engine mounting control solenoid
P1576 Engine mounting control solenoid, short to ground Wiring short to ground, engine mounting control solenoid
P1577 Engine mounting control solenoid, open circuit Wiring open circuit, engine mounting control solenoid
P1579 Throttle control unit – basic setting Basic setting not carried out
P1580 Throttle motor, circuit malfunction Wiring, throttle motor
P1581 Throttle control unit – basic setting Basic setting not carried out
P1582 Idle speed adaptation – limit reached Intake/exhaust leak, AIR system, fuel pressure/pump, injector(s), EVAP canister purge valve
P1586 Engine mounting control solenoid, short to positive Wiring short to positive, engine mounting control solenoid
P1589 AC/heater air temperature control switch – short to ground Wiring short to ground, AC/heater air temperature control switch
P1590 AC/heater air temperature control switch – open circuit Wiring open circuit, AC/heater air temperature control switch
P1592 Barometric pressure (BARO) sensor/ manifold absolute pressure (MAP) sensor – implausible ratio TC system, MAP sensor
P1593 Altitude adaption – signal outside tolerance Intake leak, MAF sensor, throttle control unit
P1599 Idle control – lean running speed above specification IAC valve
P1600 – P1699 (ECM – computer output circuit)
P1600 Engine control module (ECM) – supply voltage low from ignition switch Battery, alternator, wiring open circuit
P1601 Engine control module (ECM) – supply voltage Wiring, engine control relay
P1602 Engine control module (ECM) – supply voltage low from battery Battery was disconnected, battery discharged, alternator, wiring open circuit, fuse
P1603 Engine control module (ECM) – defective ECM
P1604 Engine control module (ECM) – defective ECM
P1606 Rough road signal – circuit malfunction ABS control module trouble code(s) stored, CAN data bus
P1608 Power steering pressure (PSP) switch – circuit malfunction Wiring, PSP switch
P1609 Engine control module (ECM) – crash switch-off triggered Airbag triggered
P1610 Engine control module (ECM) – defective ECM
P1611 Malfunction indicator lamp (MIL) – short to ground Wiring short to ground
P1612 Engine control module (ECM) – coding Incorrectly coded
P1613 Malfunction indicator lamp (MIL) – open circuit/short to positive Wiring open circuit/short to positive
P1615 Engine oil temperature (EOT) sensor – range/performance problem Engine oil level, wiring, EOT sensor
P1616 Glow plug warning lamp – short to positive Wiring short to positive
P1617 Glow plug warning lamp – open circuit/short to ground Bulb, wiring open circuit/short to ground
P1618 Glow plug relay – short to positive Wiring short to positive, glow plug relay
P1619 Glow plug relay – open circuit/short to ground Wiring open circuit/short to ground, glow plug relay
P1620 Instrument panel, ECT signal – open circuit/ short to positive Wiring open circuit/short to positive, instrument panel
P1621 Instrument panel, ECT signal – short to ground Wiring short to ground, instrument panel
P1622 Instrument panel, ECT signal – implausible signal Wiring, instrument panel, ECT sensor
P1623 CAN data bus – no signal Trouble code(s) stored in other system(s), wiring, matching resistor in ECM
P1624 Malfunction indicator lamp (MIL) – request signal active Trouble code(s) stored in other system(s)
P1625 CAN data bus, TCM – incorrect signal TCM trouble code(s) stored, TCM incorrectly coded, wiring, matching resistor in ECM
P1626 CAN data bus, TCM – no signal TCM trouble code(s) stored, TCM incorrectly coded, wiring, matching resistor in ECM
P1629 CAN data bus, cruise control – no signal Cruise control trouble code(s) stored, wiring, matching resistor in ECM
P1630 Accelerator pedal position (APP) low input Wiring short to ground, APP sensor
P1631 Accelerator pedal position (APP) high input Wiring short to positive, APP sensor
P1632 Accelerator pedal position (APP) sensor – supply voltage Operating voltage too high/low, wiring
P1633 Accelerator pedal position (APP) low input Wiring short to ground, APP sensor
P1634 Accelerator pedal position (APP) high input Wiring short to positive, APP sensor
P1635 CAN data bus, AC – no signal AC control module trouble code(s) stored, wiring, matching resistor in ECM
P1636 CAN data bus, SRS – no signal SRS control module trouble code(s) stored, wiring, matching resistor in ECM
P1637 CAN data bus, electronic CE – no signal Trouble code(s) stored, wiring, matching resistor in ECM
P1639 Accelerator pedal position (APP) sensor 1/2 – range/performance problem Wiring, APP sensor
P1640 Engine control module (ECM) – defective ECM
P1642 SRS control module – system malfunction Trouble code(s) stored
P1645 CAN data bus, 4WD – no signal 4WD trouble code(s) stored, wiring, matching resistor in ECM
P1648 CAN data bus – defective Wiring, matching resistor in ECM
P1649 CAN data bus, ABS – no signal ABS control module trouble code(s) stored, wiring, matching resistor in ECM
P1650 CAN data bus, instrumentation – no signal Instrumentation control module trouble code(s) stored, wiring, matching resistor in ECM
P1652 Transmission control module (TCM) – system malfunction Trouble code(s) stored
P1653 ABS control module – system malfunction Trouble code(s) stored
P1654 Instrumentation control module – system malfunction Trouble code stored for engine oil level/ temperature sensor
P1656 AC signal – short to ground Wiring short to ground
P1657 AC signal – short to positive Wiring
P1658 CAN data bus, cruise control – incorrect signal Cruise control trouble code(s) stored, wiring, matching resistor in ECM
P1659 Engine coolant blower motor, speed 1 – short to positive Wiring short to positive, engine coolant blower motor
P1660 Engine coolant blower motor, speed 1 – short to ground Wiring short to ground, engine coolant blower motor
P1661 Engine coolant blower motor, speed 2 – short to positive Wiring short to positive, engine coolant blower motor
P1662 Engine coolant blower motor, speed 2 – short to ground Wiring short to ground, engine coolant blower motor
P1663 Injector, activation – short to positive Wiring short to positive, ECM
P1664 Injector, activation – current circuit Wiring open circuit/short to ground
P1665 Injector – mechanical fault Injector
P1666 Injector 1 – current circuit Wiring open circuit/short to ground
P1667 Injector 2 – current circuit Wiring open circuit/short to ground
P1668 Injector 3 – current circuit Wiring open circuit/short to ground
P1669 Injector 4 – current circuit Wiring open circuit/short to ground
P1672 Engine coolant blower motor, speed 1 – open circuit/short to ground Wiring open circuit/short to ground
P1674 CAN data bus, instrumentation – incorrect signal Wiring, instrumentation control module trouble code(s) stored, matching resistor in ECM
P1676 ETS warning lamp – circuit malfunction Instrumentation control module trouble code(s) stored, wiring, matching resistor in ECM
P1677 ETS warning lamp – short to positive Instrumentation control module trouble code(s) stored, wiring short to positive, matching resistor in ECM
P1678 ETS warning lamp – short to ground Instrumentation control module trouble code(s) stored, wiring short to ground, matching resistor in ECM
P1679 ETS warning lamp – open circuit instrumentation control module trouble code(s) stored, wiring open circuit, matching resistor in ECM
P1680 Limp-home mode – active Throttle control unit, APP sensor
P1681 Engine control module (ECM) – programming incomplete ECM
P1682 CAN data bus, ABS – implausible signal ABS control module trouble code(s) stored, wiring, matching resistor in ECM
P1683 CAN data bus, SRS – implausible signal SRS control module trouble code(s) stored, wiring, matching resistor in ECM
P1690 Malfunction indicator lamp (MIL) – circuit malfunction Instrumentation control module trouble code(s) stored, wiring, matching resistor in ECM
P1691 Malfunction indicator lamp (MIL) – open circuit Instrumentation control module trouble code(s) stored, wiring open circuit, matching resistor in ECM
P1692 Malfunction indicator lamp (MIL) – short to ground Instrumentation control module trouble code(s) stored, wiring short to ground, matching resistor in ECM
P1693 Malfunction indicator lamp (MIL) – short to positive Instrumentation control module trouble code(s) stored, wiring short to positive, matching resistor in ECM
P1696 CAN data bus, steering column electronics – incorrect signal Wiring, matching resistor in ECM
P1698 Check DTC Memory Of Steering Column ECU
P1700 – P1799 (Transmission)
P1740 Clutch Temperature Monitoring
P1800 – P1899 (Transmission)
P1851 CAN data bus, ABS – incorrect signal ABS trouble code(s) stored, wiring, matching resistor in ECM
P1853 CAN data bus, ABS – incorrect signal ABS trouble code(s) stored, wiring, matching resistor in ECM
P1854 CAN data bus, ABS – defective ABS trouble code(s) stored, wiring, matching resistor in ECM
P1857 Load Signal Error Message From ECU
P1900 – P1999 (Transmission)
P1900 Engine coolant blower motor, speed 2 – open circuit/short to ground Wiring open circuit/short to ground, engine coolant blower motor
P1901 Engine coolant blower motor run-on relay – short to positive Wiring short to positive, engine coolant blower motor run-on relay
P1902 Engine coolant blower motor run-on relay – open circuit/short to ground Wiring open circuit/short to ground, engine coolant blower motor run-on relay
P1903 Engine Coolant Hydraulic Blower Motor Solenoid Short To Positive
P1904 Engine Coolant Hydraulic Blower Motor Solenoid Open Circuit/Short To Ground
P1905 Charge Air Coolant Pump Relay Short To Positive
P1906 Charge Air Coolant Pump Relay Open Circuit/Short To Ground
P1908 Data Bus ECM 1/2 Software Version Monitoring
P1909 Transmission Temperature Sensor Circuit Open or Shorted to Power Or Ground
P1910 Data Bus ECM 1/2 No Signal From ECM
P1911 Data Bus ECM 1/2 Circuit Malfunction
P1912 Brake servo pressure sensor – open circuit/ short to positive Wiring open circuit/short to positive, brake servo pressure sensor
P1913 Brake servo pressure sensor – short to ground Wiring short to ground, brake servo pressure sensor
P1914 Brake servo pressure sensor – range/ performance problem Vacuum leak, wiring, brake servo pressure sensor
P1920 Engine mounting control solenoid, open circuit/short to ground Wiring open circuit/short to ground, engine mounting control solenoid
P1923 Engine Control Module Malfunction
P1951 Radiator Fan 2 Movement Restricted / Jammed
P1952 Turbocharger Control Module 1 Defective
P1953 Turbocharger Control Module 2 Defective
P1996 Friction Too High Intake Camshaft Adjustment Bank 1
P1997 Friction Too High Exhaust Camshaft Adjustment Bank 1
P1998 Friction Too High Intake Camshaft Adjustment Bank 2
P1999 Friction Too High Exhaust Camshaft Adjustment Bank 2

vw diesel particulate filter

Understanding VW Fault Codes List

Fault codes, in the context of Volkswagen vehicles, are diagnostic tools that provide valuable insights into the health of the vehicle. They are generated by the car’s onboard computer systems, which constantly monitor various components for abnormalities. When an issue is detected, a fault code is logged, allowing technicians to pinpoint the problem efficiently.

Common VW Fault Codes

Volkswagen vehicles may exhibit a wide range of fault codes, each indicating a specific issue. Here are some of the most common VW fault codes:

  1. P0420: Indicates a problem with the catalytic converter.
  2. P0300: Points to a random/multiple cylinder misfire.
  3. U0401: Signals a communication error with the engine control module (ECM).

Understanding these codes and their potential causes is essential for prompt troubleshooting and repair.

Diagnosing and Resolving VW Fault Codes

When a fault code is triggered, it’s crucial to diagnose and resolve it promptly to avoid further damage and downtime. Here’s a step-by-step guide to tackling fault codes in Volkswagen vehicles:

  1. Access the Code: Begin by connecting a diagnostic tool to the car’s onboard computer to access the fault code.
  2. Interpret the Code: The fault code will consist of alphanumeric characters. Consult the VW fault code list or manual to interpret the code’s meaning.
  3. Identify the Cause: Use the code’s description to identify the potential cause of the issue. This may involve inspecting specific components or systems.
  4. Address the Problem: Based on your findings, take the necessary steps to address the problem. This may involve repairs, replacements, or adjustments.
  5. Clear the Code: Once the issue is resolved, clear the fault code from the system to verify that the problem has been fixed.

While some fault codes can be addressed by experienced car owners or mechanics, others may require professional assistance.

Preventive Maintenance and VW Fault Codes

Preventive maintenance is a key strategy to minimize the occurrence of fault codes in Volkswagen vehicles. Regular checks and maintenance routines can help identify and address potential issues before they trigger fault codes. Here are some tips for effective preventive maintenance:

  • Regular Inspections: Conduct routine inspections of key components like sensors, wiring, and connectors.
  • Fluid Checks: Monitor fluid levels, including oil, coolant, and fuel, to ensure they are at optimal levels.
  • Software Updates: Keep the car’s software and ECM up to date to prevent software-related issues.

By implementing preventive measures, car owners can reduce downtime and repair costs.

Importance of Addressing VW Fault Codes

Ignoring fault codes can lead to various consequences. These include:

  • Safety Risks: Some fault codes are related to critical systems like brakes or engine performance. Ignoring them can compromise the safety of the driver and passengers.
  • Financial Implications: Unresolved fault codes can lead to more extensive and costly repairs down the line. Addressing issues promptly can save both time and money.

Using Technology for VW Fault Code Management

Advancements in technology have made fault code management more efficient than ever. Many modern Volkswagen vehicles are equipped with advanced diagnostic tools and software that simplify the process. These technologies offer benefits such as real-time monitoring, automatic reporting, and predictive maintenance.

VW Fault Code List Resources

To effectively manage fault codes, it’s crucial to have access to a comprehensive VW fault code list. You can find these resources in various places:

  • Manufacturer’s Manuals: Volkswagen provides detailed information about fault codes in its official manuals.
  • Online Resources: Numerous websites and forums dedicated to car maintenance provide downloadable fault code lists and resources.
  • Diagnostic Tools: Some diagnostic tools come with built-in code databases for quick reference.

It’s essential to keep these resources updated, as new fault codes may be introduced with advancements in car technology.

Unlocking Efficiency: The 30 Min DPF Clean Advantage

Addressing Heavy Machinery Challenges and VW Fault Codes

Navigating the intricate world of heavy machinery can feel like a daunting task, especially when confronted with the complexities of fault codes in your VW equipment. But fear not! There’s a beacon of hope on the horizon, and it’s called 30 Min DPF Clean. We provide unparalleled Diesel Particulate Filter (DPF) cleaning services across New Jersey, Philadelphia, and Delaware, setting us apart as industry leaders. Curious about why you should trust us to ensure your machinery runs smoothly? Let’s explore the answer.

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30 Min DPF Clean: Your All-in-One Solution

What truly sets 30 Min DPF Clean apart is our comprehensive approach to machinery maintenance. We don’t limit ourselves to DPF cleaning; our expertise extends to a wide range of services, including Exhaust Gas Recirculation (EGR), Selective Catalytic Reduction (SCR), Diesel Oxidation Catalyst (DOC), and Catalytic Converter cleaning. By harnessing cutting-edge technology, we guarantee seamless machinery operation, effectively reducing the occurrence of troublesome fault codes.

Quality Cleaning for Peak Performance

At 30 Min DPF Clean, we understand that a clean machine is a reliable machine. That’s why we go the extra mile to eliminate ash, soot, and other residues from your diesel engines. Our exceptional DPF Cleaning service ensures the optimal performance of your machinery, offering you peace of mind while keeping those fault codes at bay.

Competitive Prices, Exceptional Service

In the grand scheme of things, 30 Min DPF Clean provides top-tier service without straining your budget. Our competitive pricing model, combined with outstanding DPF cleaning services, makes us the ideal choice for those seeking to extend the lifespan of their VW machinery. So, when your equipment starts communicating through fault codes, consider reaching out to 30 Min DPF Clean. Our skilled technicians excel at addressing various issues, helping you decipher the VW Fault Codes List and swiftly restoring your machinery to its prime condition. Remember, in machinery maintenance, it’s not just about fixing problems—it’s about preventing them. And 30 Min DPF Clean is your trusted partner on that journey.

Conclusion

VW fault codes are invaluable tools for maintaining the health and performance of these remarkable vehicles. By understanding and promptly addressing these codes, car owners can ensure their vehicles operate at peak efficiency while minimizing safety risks and repair costs. Remember, proactive fault code management is key to a smooth and trouble-free journey on the road.

FAQs

1. Are VW fault codes unique to Volkswagen vehicles?

  • While some fault codes are specific to Volkswagen vehicles, many are standardized across the automotive industry. However, the interpretation and troubleshooting process may vary.

2. Can I clear fault codes on my own, or should I seek professional help?

  • Clearing fault codes can often be done by experienced car owners, but it’s essential to diagnose and address the underlying issue. If you’re uncertain, it’s advisable to consult a professional mechanic.

3. How often should I perform preventive maintenance on my Volkswagen vehicle?

  • Regular preventive maintenance should be performed according to the manufacturer’s recommendations. Typically, this includes routine checks and servicing at specified intervals.

4. Are there any software tools available for monitoring fault codes in real-time?

  • Yes, many modern Volkswagen vehicles come equipped with advanced diagnostic tools that offer real-time monitoring and reporting. Additionally, there are aftermarket software solutions available.

5. What should I do if a fault code reoccurs after clearing it?

  • If a fault code reoccurs, it indicates that the underlying issue persists. In such cases, it’s essential to investigate further and address the problem to prevent further damage or safety risks.

vw fault code list

For more information on VW fault codes and related services, visit the official VW website.