P0125 2002 FORD F150 - Insufficient Coolant Temperature for Closed Loop Fuel Control
P0125 2002 FORD F150 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
P0125 2002 FORD F150 Tech Notes
Compare thermostat specification to actual engine coolant temperature using the engine temperature PID (ECT or CHT). Temperature reading should be similar when engine is at normal operating temperature.
Cost of diagnosing the P0125 2002 FORD F150 code
The cost of diagnosing the P0125 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 P0125 2002 FORD F150 code detected?
The voltage sent to Engine Control Module (ECM) from the Engine Coolant Temperature (ECT) sensor is not practical, even when some time has passed after starting the engine. The engine is taking too long to reach the normal temperature level.
P0125 2002 FORD F150 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0125 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.