P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P0125 - INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
| Description: | Indicates the ECT or CHT sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting the engine. | ||
| Possible Causes: |
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| Diagnostic Aids: | Compare the thermostat specification to the actual engine coolant temperature using the engine temperature PID (ECT or CHT). The temperature reading should be similar when the engine is at a normal operating temperature. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles with a CHT sensor only | - | - | GO to PINPOINT TEST DL: CYLINDER HEAD TEMPERATURE (CHT) SENSOR Step 22. |
| Vehicles with an ECT sensor only | - | - | GO to PINPOINT TEST DX: ENGINE COOLANT TEMPERATURE (ECT) SENSOR Step 18. |
| Vehicles with both CHT and ECT sensor | - | - | GO to PINPOINT TEST DX: ENGINE COOLANT TEMPERATURE (ECT) SENSOR Step 18. |