Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) U0100 BUICK OBD Code Description Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications…
Tag: BUICK
P0641 BUICK 5 Volt Reference Voltage Incorrect
Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit When is the obd code mean? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or lower than expected Symptoms – Engine Light…
P1114 BUICK Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1114 BUICK OBD Code Description The Engine Coolant…
P2761 BUICK Torque Converter Clutch Pressure Control Solenoid Valve Circuit
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…
P1641 BUICK FC Relay 1 Control Circuit
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…
P1642 BUICK FC Relay 2 And 3 Control Circuit
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…
P0335 BUICK Crankshaft Position Sensor A Circuit Malfunction
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…
P1336 BUICK Crankshaft Position System Variation Not Learned
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…
P0336 BUICK Crankshaft Position Sensor A Circuit Range/Performance
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…
P1371 BUICK Missing Low Resolution Signal
Possible causes – Faulty Crankshaft Sensor– Crankshaft Sensor harness is open or shorted– Crankshaft Sensor circuit poor electrical connection– Faulty Ignition Control Module When is the obd code mean? The Powertrain Control Module (PCM) detects a predetermined amount of high resolution pulses before detecting any low resolution pulses. Symptoms – Engine Light ON (or Service…