Possible causes – Turbocharger Boost Control Position Sensor harness is open or shorted– Turbocharger Boost Control Position Sensor circuit poor electrical connection– Faulty Turbocharger Boost Control Position Sensor When is the obd code mean? The ECM has detected a high voltage from the Turbocharger Boost Control Position Sensor Symptoms – Engine Light ON (or Service…
Tag: GMC
P0411 GMC Secondary Air Injection System Insufficient Flow
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…
P0449 2006 GMC SIERRA Evaporative Emission Vent Valve Solenoid Malfunction
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 Tech description Check Engine Light Diag EVAP Codes User Submitted Video When is the obd code mean? The…
P0449 GMC Evaporative Emission Vent Valve Solenoid Malfunction
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 Tech description Check Engine Light Diag EVAP Codes User Submitted Video When is the obd code mean? The…
P1686 GMC 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 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…
P1415 GMC Secondary Air Injection System Bank 1
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…
P1416 GMC Secondary Air Injection System Bank 2
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…
P1639 GMC PCM 5 Volt Reference Voltage Circuit Condition
Possible causes – Sensor using 5 volt reference line shorted to ground– Circuit short to ground When is the obd code mean? If the voltage is out of tolerance, the PCM will set DTC P1639. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1639 GMC OBD Code Description The powertrain control module…
P0700 GMC Transaxle Control System Malfunction
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 GMC…
P0088 GMC Fuel Rail/System Pressure Too High
Possible causes – Sticking fuel rail pressure regulator When is the obd code mean? The actual fuel rail pressure is above operating specifications. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0088 GMC OBD Code Description