P1125 BUICK Accelerator Pedal Position Sensor Fault

Possible causes – Faulty Accelerator Pedal Position Sensor– Accelerator Pedal Position Sensor harness is open or shorted– Accelerator Pedal Position Sensor circuit poor electrical connection When is the obd code mean? The Powertrain Control Module (PCM) detects that the difference between Accelerator Pedal Position (APP) sensor 1 and APP sensor 2 is more than the…

P2138 BUICK Accelerator Pedal Position Sensor 1-2 Correlation

Possible causes – Faulty Accelerator Pedal Position Sensor– Accelerator Pedal Position Sensor harness is open or shorted– Accelerator Pedal Position Sensor circuit poor electrical connection– Faulty Electric Throttle Control Actuator When is the obd code mean? The Engine Control Module (ECM) has detected that the APP sensor 1 and APP sensor 2 disagree more than…

P2431 BUICK Secondary Air Injection System Pressure Sensor Signal Performance Fault

Possible causes – Faulty AIR Pressure Sensor– AIR Pressure Sensor harness is open or shorted– AIR Pressure Sensor circuit poor electrical connection When is the obd code mean? The AIR Pressure Sensor is reporting a pressure greater than or less than expected during the system monitor test Symptoms – Engine Light ON (or Service Engine…

P0606 BUICK Engine Control Module Internal Performance Error

Possible causes – Engine Control Module (ECM) Harness power supply circuit is open or shorted– Engine Control Module (ECM) Programming– Faulty Engine Control Module (ECM) Tech description Check the PCM fuse, if fuse is OK try erasing the code first and if the code comes back you may have to reprogram or replaced the PCM….

P1680 BUICK Control Module Not Programmed

Possible causes – Engine Control Module (ECM) programm error– Wrong Engine Control Module (ECM)– Faulty Engine Control Module (ECM) Tech description This code means that there may be an internal problem with the Engine Control Module (ECM). Start by checking battery charge and connections. Try clearing the code and re test. Symptoms – Engine Light…

P1345 BUICK Crankshaft Position-Camshaft Position Correlation

Possible causes – Engine mechanical condition-Valve timing off– Cam sensor or crank sensor are loose on their mounting– Faulty camshaft position sensor– Faulty crankshaft position sensor Tech description If this DTC started after recent internal engine repairs, inspect for proper engine mechanical timing. With the camshaft cover removed and the #1 cylinder at top dead…

P1678 BUICK Immobilizer Powertrain Identification Failed

Possible causes – Deterrent key not programmed to vheicle– Faulty Deterrent key– Fualty ignition switch– Poor electrical connection for Deterrent circuit components Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– No or hard engine start situation P1678 BUICK OBD Code Description The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and…

P1679 BUICK Immobilizer Environment Identification Failed

Possible causes – Deterrent key not programmed to vheicle– Faulty Deterrent key– Fualty ignition switch– Poor electrical connection for Deterrent circuit components Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– No or hard engine start situation P1679 BUICK OBD Code Description The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and…