Possible causes – Faulty front heated oxygen sensor– Ignition misfiring– Faulty fuel injectors– Exhaust gas leaks– Incorrect fuel pressure – Faulty Mass Air Flow (MAF) sensor When is the obd code mean? – Fuel injection system does not operate properly.– The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.)…
Tag: AUDI
P0458 AUDI EVAP System Purge Control Solenoid Low
Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected a low voltage on the canister purge solenoid with the driver…
P0489 AUDI Exhaust Gas Recirculation Throttle Control Circuit A Circuit Low
Possible causes – Faulty Exhaust Gas Recirculation (EGR) Solenoid– Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted– Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0489 AUDI OBD Code Description The Engine Control Module (ECM) does not detect voltage on the…
P0490 AUDI Exhaust Gas Recirculation Throttle Control Circuit A Circuit High
Possible causes – Faulty Exhaust Gas Recirculation (EGR) Solenoid– Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted– Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0490 AUDI OBD Code Description The Engine Control Module (ECM) does not detect voltage on the…
P1455 AUDI Exhaust Gas Temperature Sensor 1 Range/Performance
Possible causes – Faulty Exhaust Gas Temperature Sensor– Exhaust Gas Temperature Sensor harness is open or shorted– Exhaust Gas Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
P0480 AUDI Cooling Fan 1 Control Circuit Malfunction
Possible causes – Faulty fan control relay– Fan control relay harness is open or shorted– Fan control relay circuit poor electrical connection– Faulty cooling fan 1– Fan cooling fan harness is open or shorted– Fan cooling fan circuit poor electrical connection When is the obd code mean? The P0480 code is detected when the Engine…
P0642 AUDI Sensor Voltage Circuit A Low Voltage
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit Tech description There is a factory service bulletin for the P0642 code for the following models: 2005-2007 Audi A32005-2007 Audi A42007 Audi A4 Cabriolet2008 Audi TTAudi Factory Service Bulletin OBDII…
P0643 AUDI Sensor Reference Voltage A Circuit High
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher than expected Symptoms – Engine Light ON (or…
P1426 AUDI Tank Ventilation Valve Open Circuit
Possible causes – Faulty EVAP Canister Purge Regulator Valve– EVAP Canister Purge Regulator Valve harness is open or shorted– EVAP Canister Purge Regulator Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1426 AUDI OBD Code Description Evaporative Emissions (EVAP) canister purge regulator valve in tank venting system…
P0445 AUDI EVAP System Purge Control Valve Circuit Shorted
Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection When is the obd code mean? – An excessively high voltage signal is sent to Engine Control Module (ECM) through the valve Symptoms –…