Possible causes – Leaking or stuck open thermostat– Low engine coolant level– Insufficient warm up time– Faulty engine coolant temperature sensor– Engine coolant temperature sensor harness is open or shorted– Engine coolant temperature sensor circuit poor electrical connection Tech description If cooling system is not leaking and the fluid level is OK, replacing the thermostat…
Tag: PONTIAC
P0562 PONTIAC System Voltage Low
Possible causes – Low battery charge– Battery defective– Loose or missing alternator drive belt– Faulty alternator– Open or short system voltage circuit Tech description Start by recharging or replacing the battery. When is the obd code mean? The Powertrain Control Module (PCM) has detected that the electrical system voltage level is too low. Symptoms –…
P0117 PONTIAC Engine Coolant Temperature Circuit Low Input
Possible causes – Low engine coolant level– Faulty Engine Coolant Temperature (ECT) sensor– Faulty engine coolant thermostat– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor circuit poor electrical connection When is the obd code mean? An excessively low voltage from the sensor is sent to ECM. Symptoms –…
P0118 PONTIAC Engine Coolant Temperature Circuit High Input
Possible causes – Low engine coolant level– Faulty Engine Coolant Temperature (ECT) sensor– Faulty engine coolant thermostat– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection When is the obd code mean? When the Powertrain Control Module (PCM) senses a signal voltage higher than the…
P0125 PONTIAC Insufficient Coolant Temperature for Closed Loop Fuel Control
Possible causes – Low engine coolant level– Leaking or stuck open thermostat– Faulty Engine Coolant Temperature (ECT) sensor– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection When is the obd code mean? The voltage sent to Powertrain Control Module (PCM) from the Engine Coolant…
P0521 PONTIAC Engine Oil Pressure Sensor/Switch Circuit Range/Performance
Possible causes – Low oil level or motor mechanical fault– Faulty oil pressure sensor– Oil Pressure Sensor harness is open or shorted– Oil Pressure Sensor circuit poor electrical connection When is the obd code mean? The P0521 is detected when the signal sent from oil pressure sensor to PCM goes out of range. Symptoms –…
P0523 PONTIAC Engine Oil Pressure Sensor Circuit High Voltage
Possible causes – Low oil level or motor mechanical fault– Faulty Oil Pressure sensor– Oil Pressure Sensor harness is open or shorted– Oil Pressure Sensor circuit poor electrical connection When is the obd code mean? The P0522 is set when the Powertrain Control Module (PCM) senses a signal voltage higher than the normal operating range…
P0522 PONTIAC Engine Oil Pressure Sensor Circuit Low Voltage
Possible causes – Low oil level or motor mechanical fault– Faulty Oil Pressure sensor– Oil Pressure Sensor harness is open or shorted– Oil Pressure Sensor circuit poor electrical connection When is the obd code mean? The P0522 is set when the Powertrain Control Module (PCM) senses a signal voltage lower than the normal operating range…
P0052 PONTIAC HO2S Heater Control Circuit High Bank 2 Sensor 1
Possible causes – Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection– Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse– Faulty Engine Control Module (ECM) When is…
P2178 PONTIAC Fuel Trim System Rich at Cruise or Accel
Possible causes – High fuel pressure– Leaking fuel injector or pressure regulator– Failed Mass Air Flow (MAF) sensor When is the obd code mean? The Engine Control Module (ECM) has detected a rich air/fuel ratio Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2178 PONTIAC OBD Code Description The Engine Control Module…