Faulty engine coolant temperature (ECT) sensor or its wiring; Poor electrical connection at the ECT sensor or ECM; Internal ECM fault affecting the coolant temperature processing circuit; Corroded or damaged wiring harness between the ECT sensor and ECM; Low coolant level or air pockets causing inaccurate temperature readings; Aftermarket or incorrect ECT sensor installed

DTC codes / P06xx · Computer and output circuits / P060F

P060FInternal Control Module Coolant Temperature Performance

Q: What does code P060F mean?

Internal Control Module Coolant Temperature Performance. P060F indicates that the engine control module (ECM) has detected an internal fault in its own coolant temperature signal processing circuit, not necessarily a problem with the coolant temperature sensor itself. The ECM compares its internal coolant temperature readings against expected values and sets this code when the calculated temperature is outside a plausible range or inconsistent with other sensor inputs.

P060F indicates that the engine control module (ECM) has detected an internal fault in its own coolant temperature signal processing circuit, not necessarily a problem with the coolant temperature sensor itself. The ECM compares its internal coolant temperature readings against expected values and sets this code when the calculated temperature is outside a plausible range or inconsistent with other sensor inputs.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
Erratic or inaccurate temperature gauge readings on the dashboard
Poor fuel economy or rough running when the engine is cold
Cooling fan may run continuously or not at all
Difficulty starting or stalling when the engine is cold
In rare cases, the engine may enter limp mode or overheat

Common causes, most likely first

Faulty engine coolant temperature (ECT) sensor or its wiring
Poor electrical connection at the ECT sensor or ECM
Internal ECM fault affecting the coolant temperature processing circuit
Corroded or damaged wiring harness between the ECT sensor and ECM
Low coolant level or air pockets causing inaccurate temperature readings
Aftermarket or incorrect ECT sensor installed

How to diagnose and fix it

Check coolant level and inspect for leaks or air pockets in the cooling system
Perform a visual inspection of the ECT sensor and its connector for damage or corrosion
Test the ECT sensor resistance with a multimeter and compare to specifications
Check the wiring harness for continuity and shorts between the ECT sensor and ECM
Verify ECM software is up to date and check for any applicable technical service bulletins
If all external checks pass, diagnose the ECM internal circuit or replace the ECM as needed

Don't replace the ECM without checking these first

A low coolant level or trapped air can cause the ECM to see implausible temperature changes and set P060F, so always pressure-test the cooling system before condemning the ECM.
The ECT sensor on many vehicles shares a reference voltage with other sensors; a short in a related circuit can corrupt the coolant temperature signal and trigger this code.
Aftermarket sensors with incorrect resistance curves are a common cause of P060F because the ECM's internal plausibility checks reject the signal.
P060F can be set by a weak battery or poor ground connection that causes voltage spikes affecting the ECM's internal processing.
Some vehicles require a relearn procedure after replacing the ECT sensor or ECM; skipping it can cause the code to return even after a correct repair.

Can I keep driving with P060F?

You can usually drive with P060F, but monitor the temperature gauge closely and avoid heavy loads or long trips until it is diagnosed. If the engine overheats or runs poorly, stop driving and seek professional help immediately.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.