Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- 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 Temperature (ECT) sensor - Faulty engine coolant thermostat

When Detected

Coolant temperature signal sent to the ngine Control Module (ECM) is not within specified range.

Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

Information For Specific Makes

P0116 ACURA P0116 HONDA P0116 CHRYSLER P0116 JEEP P0116 DODGE P0116 FORD P0116 HYUNDAI P0116 INFINITI P0116 NISSAN P0116 ISUZU P0116 KIA P0116 LEXUS P0116 TOYOTA P0116 MAZDA P0116 MITSUBISHI P0116 AUDI P0116 VOLKSWAGEN P0116 JAGUAR