P0117 2002 FORD F150 - Engine Coolant Temperature Circuit Low Input
P0117 2002 FORD F150 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
P0117 2002 FORD F150 Tech Notes
Indicates the sensor signal is less than Self-Test minimum. The ECT sensor minimum is 0.2 volts or 121°C (250°F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC.
Cost of diagnosing the P0117 2002 FORD F150 code
The cost of diagnosing the P0117 2002 FORD F150 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
When is the P0117 2002 FORD F150 code detected?
An excessively low voltage from the sensor is sent to ECM.
P0117 2002 FORD F150 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0117 2002 FORD F150 Meaning
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.