P1655 BUICK EVAP Purge Solenoid Control Circuit

Possible causes – Faulty EVAP Purge Solenoid– EVAP Purge Solenoid harness is open or shorted– EVAP Purge Solenoid circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1655 BUICK OBD Code Description The Powertrain Control Module (PCM) has detected an improper voltage level on the output driver module for…

P1646 BUICK EVAP Vent Solenoid Output Circuit

Possible causes – Faulty EVAP Vent Solenoid– EVAP Vent Solenoid harness is open or shorted– EVAP Vent Solenoid circuit poor electrical connection When is the obd code mean? The Powertrain Control Module (PCM) has detected the EVAP Vent Solenoid circuit was low Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1646 BUICK…

U0121 BUICK Lost Communication With Electronic Brake Control Module

Possible causes – Faulty Electronic Brake Control Module (EBCM) – EBCM harness is open or shorted– EBCM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) U0121 BUICK OBD Code Description Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial…

U0100 BUICK Lost Communication With Engine Control Module

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…

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…

P1115 BUICK Engine Coolant Temperature Sensor Circuit Intermittent High 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) P1115 BUICK OBD Code Description The Engine Coolant…

P1116 BUICK Engine Coolant Temperature Sensor Signal Unstable Or Intermittent

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) P1116 BUICK OBD Code Description The Engine Coolant…

P1117 BUICK Engine Coolant Temp Signal Out-Of-Range Low

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) P1117 BUICK OBD Code Description The Engine Coolant…

P1118 BUICK Engine Coolant Temp Signal Out-Of Range High

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) P1118 BUICK OBD Code Description The Engine Coolant…