P1660 GMC Code - Cooling Fan Control Circuit
Quick Answer
The P1660 code for GMC vehicles indicates a problem with the cooling fan control circuit. Common causes include Faulty cooling fan relay, Damaged wiring or connectors in the cooling fan circuit, Defective cooling fan motor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1660 GMC indicates Cooling Fan Control Circuit.
- Common causes
- Common causes include Faulty cooling fan relay, Damaged wiring or connectors in the cooling fan circuit, Defective cooling fan motor.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1660 GMC Description
The P1660 code for GMC vehicles indicates a problem with the cooling fan control circuit. The cooling fan is a crucial component of the vehicle's cooling system, responsible for regulating the temperature of the engine by dissipating heat. When this code is triggered, it means that the Engine Control Module (ECM) has detected a malfunction in the control circuit that operates the cooling fan. This can lead to inadequate cooling of the engine, which can result in overheating and potential damage to the engine components.
Common Causes of P1660 GMC
- Faulty cooling fan relay
- Damaged wiring or connectors in the cooling fan circuit
- Defective cooling fan motor
- ECM malfunction
- Overheating due to low coolant levels or a malfunctioning thermostat
Symptoms of P1660 GMC
- Check Engine Light illuminated
- Engine overheating
- Cooling fan not operating
- Reduced engine performance
- Increased engine temperature gauge readings
How to Fix P1660 GMC
- Begin by diagnosing the specific cause of the P1660 code using a diagnostic scanner.
- Inspect the cooling fan relay, wiring, and connectors for any signs of damage or corrosion. Replace or repair as necessary.
- Test the cooling fan motor to ensure it is functioning correctly. Replace if defective.
- Check the ECM for any faults or errors related to the cooling fan control circuit. Reset or reprogram as needed.
- Clear the code and test the vehicle to ensure the issue has been resolved.
Cost to Fix P1660 GMC
The cost of repairing a P1660 code related to the cooling fan control circuit can vary depending on the specific cause of the issue and the labor rates in your area. Typically, parts such as a cooling fan relay or motor can range from $50 to $200, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue may range from $150 to $500. It's advisable to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model. Labor rates can vary between $80 and $150 per hour, with rates potentially higher at dealerships or in metropolitan areas.
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