Tag: BUICK

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) P1686 BUICK 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…

Possible causes – Secondary Air Injection check valve bank 2– Secondary Air Injection (AIR) pump electrical circuit fault – Blocked Secondary Air Injection (AIR) system – Faulty Secondary Air Injection (AIR) pump When is the obd code mean? The P1415 code is set when no O2 sensor voltage change is detected by the Engine Control…

Possible causes – Secondary Air Injection check valve bank 2– Secondary Air Injection (AIR) pump electrical circuit fault – Blocked Secondary Air Injection (AIR) system – Faulty Secondary Air Injection (AIR) pump When is the obd code mean? The P1416 code is set when no O2 sensor voltage change is detected by the Engine Control…

Possible causes – Shorted or open circuit within Transmission Control Module (TCM)– Faulty Transmission Control Module (TCM) Tech description Since the P0700 is just and informative code, check the TCM for more codes to resolve the problem. Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Driveability problems– Transmission shifting problems P0700 BUICK…

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…

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…

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 BUICK OBD Code Description Transmission is in 4th gear with Torque Converter Clutch (TCC) engaged and the Engine Control Moduel (ECM) has detected excessive slippage when comparing the…

Possible causes – Vacuum hoses damaged or pinched– Faulty Air Pump inoperative– Faulty Air Pump harness is open or shorted– Faulty Air Pump circuit poor electrical connection When is the obd code mean? The AIR system does not meet the expected flow rate during testing Symptoms – Engine Light ON (or Service Engine Soon Warning…

Possible causes – Vacuum leaks, damaged hoses or improper routing– EVAP system – Check fuel cap, canister, valves or components– Faulty purge or vent solenoids– Check connector and wiring– Fuel saturated vapor canister– Failed EVAP vent solenoid When is the obd code mean? The Engine Control Module (ECM) has determined that a malfunction exists in…

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 BUICK 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…