Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Ford Bronco Base, 4D Utility, 2.3L Eng VIN H, Part Time T/Case ControlFACTORY OEM SERVICE PROCEDURE
P0125 - Insufficient Coolant Temp For Closed Loop Fuel Control
DTC DESCRIPTION P0125 - INSUFFICIENT COOLANT TEMP FOR CLOSED LOOP FUEL CONTROL
| Description: | This DTC sets when the engine coolant temperature (ECT) or the cylinder head temperature (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 |
| Bronco Sport, Continental, Corsair, EcoSport 1.0L, EcoSport 1.5L, EcoSport 2.0L, Edge, Escape/Kuga, Explorer, F-150 2.7L, KA, Mustang 2.3L, Nautilus, Ranger, Transit Connect |
GO to Pinpoint Test DX. | ||
| All others | GO to Pinpoint Test DL. | ||
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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