Possible causes – Three way catalyst converter Bank 1– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Powertrain Control Module (PCM) Tech description As the code description implies the P0420 code means that the vehicle’s control module has detected that the three-way…
Tag: GMC
P0430 GMC Catalyst System Low Efficiency Bank 2
Possible causes – Three way catalyst converter Bank 2– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Powertrain Control Module (PCM) Tech description As the code description implies the P0430 code means that the vehicle’s control module has detected that the three-way…
P0121 GMC Throttle Position Sensor 1 Performance
Possible causes – Throttle position sensor harness is open or shorted– Throttle position sensor circuit poor electrical connection– Faulty throttle position sensor.– Faulty Engine Control Module (ECM) When is the obd code mean? Malfunction is detected when an excessively low or high voltage from the sensor is sent to ECM. Symptoms – Engine Light ON…
P1870 GMC Transmission Component Slipping
Possible causes – Trailer towing may set code– Check transmission fluid level– Internal transmission fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1870 GMC OBD Code Description
P0602 GMC Powertrain Control Module Programming Error
Possible causes – Powertrain Control Module (PCM) not programed– PCM program– Faulty PCM– Wrong PCM Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0602 GMC OBD Code Description This diagnostic trouble code (DTC) indicates that the Powertrain Control Module (PCM) internal EEPROM is not flashed with any vehicle software. If you install…
P0971 GMC Pressure Control Solenoid C Control Circuit High
Possible causes – Pressure Control Solenoid harness is open or shorted– Pressure Control Solenoid circuit poor electrcial connection – Faulty Control Solenoid Valve Assembly When is the obd code mean? The Transmission Control Module (TCM) has detected an internal low voltage electrical malfunction of the Pressure Control (PC) solenoid control circuit Symptoms – Engine Light…
P1380 GMC Misfire Detected – Rough Road Data Not Available
Possible causes – Repair other codes first Tech description If the P1380 code is set with other codes, repair other codes first and then clear the code. When is the obd code mean? If the Electronic Brake Control Module (EBCM) detects a condition which will not allow the EBCM to properly identify rough road situations…
P1381 GMC Misfire Detected – No Communication with Brake Control Module
Possible causes – Repair other codes first Tech description If the P1381 code is set with other codes, repair other codes first and then clear the code. When is the obd code mean? If a loss of communication occurs which causes the Powertrain Control Module (PCM) not to receive rough road information while DTC P0300…
P1684 GMC Transmission Control Module Power Up Temperature Sensor Performance
Possible causes – Reprogram TCM and recheck code– Replace Transmission Control Module (TCM) Sensor/body assembly one piece Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1684 GMC OBD Code Description The Transmission Control Module (TCM) power up the temperature sensor is located inside of the control solenoid (w/body and TCM) valve assembly…
P1685 GMC Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
Possible causes – Reprogram TCM and recheck code– Replace Transmission Control Module (TCM) Sensor/body assembly one piece Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1685 GMC OBD Code Description The Transmission Control Module (TCM) power up the temperature sensor is located inside of the control solenoid (w/body and TCM) valve assembly…