Tag: BUICK

Possible causes – Faulty Engine Coolant Temperature Sensor– Engine Coolant Temperature Sensor harness is open or shorted– Engine Coolant Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1119 BUICK OBD Code Description The Engine Coolant Temperature (ECT) sensor contains a semiconductor device which changes resistance based…

Possible causes – Faulty Engine Oil Pressure Switch– Engine Oil Pressure Switch harness is open or shorted– Engine Oil Pressure Switch circuit poor electrical connection When is the obd code mean? If the engine has not been cranked and oil pressure has been detected the P1189 code will set. Symptoms – Engine Light ON (or…

Possible causes – Faulty EVAP canister purge solenoid– Faulty Fuel Tank Pressure (FTP) sensor When is the obd code mean? The Powertrain Control Module (PCM) has detected vacuum flow to the Fuel Tank Pressure (FTP) sensor during a system sealed condition. Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Possible a noticeable…

Possible causes – Faulty electric throttle control actuator (TP sensor 1 and 2)– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor connection– Faulty accelerator pedal position sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2135 BUICK OBD Code Description The throttle Position (TP) sensors 1 and…

Possible causes – Faulty Control Solenoid Valve Assembly– Control Solenoid Valve Assembly harness is open or shorted– Control Solenoid Valve Assembly circuit poor electrical connection When is the obd code mean? The Powertrain Control Module (PCM) commanded the Torque Converter Clutch Pulse Width Modulation (TCC PWM) solenoid on and off and the feedback voltage was…

Possible causes – Faulty Cooling Fan Relay– Cooling Fan Relay harness is open or shorted– Cooling Fan Relay circuit poor electrical component Symptoms – Engine Light ON (or Service Engine Soon Warning Light) – Cooling Fan not working P1641 BUICK OBD Code Description Ignition voltage is supplied to the Cooling Fan relay coil. The Powertrain…

Possible causes – Faulty Cooling Fan Relay– Cooling Fan Relay harness is open or shorted– Cooling Fan Relay circuit poor electrical component Symptoms – Engine Light ON (or Service Engine Soon Warning Light) – Cooling Fan not working P1642 BUICK OBD Code Description Ignition voltage is supplied to the Cooling Fan relay coil. The Powertrain…

Possible causes – Faulty crankshaft position sensor– Crankshaft position sensor harness is open or shorted– Crankshaft position sensor circuit poor electrical connection When is the obd code mean? The Powertrain Control Module (PCM) determines no signal from the Crankshaft Position (CKP) sensor for less than 3 seconds. Symptoms – Engine Light ON (or Service Engine…

Possible causes – Faulty Crankshaft Position Sensor– Crankshaft Position Sensor harness is open or shorted– Crankshaft Position Sensor circuit poor electrical connection– Signal plate may be damage Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Lack/Loss of Power– Engine Stall– Engine difficult to start P1336 BUICK OBD Code Description The Crankshaft Position…

Possible causes – Faulty crankshaft position sensor– Crankshaft position sensor harness is open or shorted– Crankshaft position sensor circuit poor electrical connection– Signal plate may be damage– Starter motor may be faulty– Starting system circuit– Dead or weak battery When is the obd code mean? The crankshaft position sensor (POS) signal is not detected by…