P0128 SATURN Engine Coolant Temperature Below Thermostat Regulating Temperature

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 notes

Read More P0128 SATURN Engine Coolant Temperature Below Thermostat Regulating Temperature

P0128 SATURN Engine Coolant Temperature Below Thermostat Regulating Temperature

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 notes

Read More P0128 SATURN Engine Coolant Temperature Below Thermostat Regulating Temperature

P0125 SATURN 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

Read More P0125 SATURN Insufficient Coolant Temperature for Closed Loop Fuel Control