What this code means

The ECM detected a low signal from the engine cooling fan control module. The fan control module is reporting an abnormally low signal, indicating the fan may not be operating at the requested speed.

Symptoms

• Check Engine Light
• Engine overheating risk
• A/C performance reduced
• Cooling fan not operating properly

Common causes

• Faulty cooling fan control module
• Wiring short to ground
• Corroded connector
• Cooling fan motor failure
• Low voltage supply to fan module

Diagnostic steps

1. Test fan control module output signal
2. Inspect wiring for shorts to ground
3. Check connector condition
4. Test fan motor by direct power
5. Check voltage supply to module

Repair notes

Replace the cooling fan control module or repair the wiring fault.

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