Category: Chevrolet

P1690 Chevrolet Wastegate Solenoid Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1685 Chevrolet 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 Chevrolet Description The Transmission Control Module (TCM) power up the temperature sensor is located…

P1686 Chevrolet Transmission Control Module Power Up Temperature Sensor Circuit High 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) P1686 Chevrolet Description The Transmission Control Module (TCM) power up the temperature sensor is located…

P1683 Chevrolet Metering Oil Pump Temperature Sensor Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1684 Chevrolet 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 Chevrolet Description The Transmission Control Module (TCM) power up the temperature sensor is located inside of…

P1679 Chevrolet 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 Chevrolet Description The Engine Control Module (ECM), the Powertrain…

P1680 Chevrolet Control Module Not Programmed Possible causes – Engine Control Module (ECM) programm error– Wrong Engine Control Module (ECM)– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1680 Chevrolet Description The Engine Control Module (ECM) program does not recognize the vehicles id, or the id is…

P1681 Chevrolet Control Module Not Programmed Possible causes – Fualty ECM– Wrong ECM for vehicle– Service program error What about the obd code? Engine Control Module (ECM) program does not recognize the vehicles id, or the id is missing in the ECM. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1681 Chevrolet…

P1682 Chevrolet Ignition 1 Switch Circuit 2 Possible causes – Faulty ignition switch– Ignition Switch harness is open or shorted– Ignition Switch circuit poor electrical connection– Faulty Engine Control Module (ECM) What about the obd code? The ECM has detected a voltage deifference between two circuits Symptoms – Engine Light ON (or Service Engine Soon…

P1676 Chevrolet EVAP Canister Purge Solenoid Control Circuit Fault Possible causes – EVAP Canister Purge Solenoid harness is open or shorted – EVAP Canister Purge Solenoid circuit poor electrical connection – Faulty EVAP Canister Purge Solenoid Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1676 Chevrolet Description The Engine Control Module (ECM)…

P1677 Chevrolet Immobilizer Function Deactivated 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 P1677 Chevrolet Description The Engine Control Module (ECM), the Powertrain Interface…

P1678 Chevrolet 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 Chevrolet Description The Engine Control Module (ECM), the Powertrain…

P1672 Chevrolet Low Engine Oil Level Lamp Control Circuit

P1673 Chevrolet Cooling Fan Relay Circuit Malfunction Possible causes – Faulty cooling fan relay– Cooling fan relay harness is open or shorted– Cooling fan relay circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Radiator fan inoperative– Engine overheating

P1674 Chevrolet Tachometer Control Circuit

P1675 Chevrolet EVAP Vent Solenoid Control Circuit Possible causes – EVAP canister vent control solenoid harness is open or shorted – EVAP canister vent control solenoid circuit poor electrical connection – Faulty EVAP canister vent control solenoid Symptoms – Engine Light ON (or Service Engine Soon Warning Light) – Possible a noticeable fuel odor caused…

P1669 Chevrolet ABS Unit Expected

P1670 Chevrolet Electronic Feedback Signal Not Detected Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1671 Chevrolet Driver 4 Line 1

P1667 Chevrolet Reverse Inhibit Solenoid Control Circuit