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Technical Description: Insufficient Coolant Temperature For Closed Loop Fuel Control

This means that the engine coolant temperature (ECT) sensor indicates that the engine has not reached the required temperature level to enter closed-loop operation within a specified amount of time after starting the engine.

You will likely not notice any drivability problems.

A code P0125 may mean that one or more of the following has happened:

Insufficient warm up time

Low engine coolant level

Leaking or stuck open thermostat

Faulty coolant temperature sensor

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Q: What is a code p0125 on a 2001 grand marquis?
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