Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's cooling fan is spinning too fast, like a toy fan that's going crazy. It might make the car too cool or use too much energy.
The engine control module (ECM) has detected that the cooling fan is running at a speed higher than expected.
The P0495 code is triggered when the ECM detects that the primary cooling fan is operating at a speed that exceeds the manufacturer's specified range. This could be due to a fault in the fan motor, a short circuit, or an issue with the fan relay.
• Check Engine Light is on
• Cooling fan running continuously
• Unusual fan noise
• Faulty cooling fan motor
• Short circuit in the fan wiring
• Defective fan relay
ECM: Engine Control Module
Relay: An electrical device that opens or closes a circuit
• Inspect the cooling fan and wiring for damage.
• Check the fan relay for proper operation.
• Use a scan tool to monitor fan speed and compare it with specifications.
• Replace the cooling fan motor if faulty.
• Repair or replace damaged wiring.
• Replace the fan relay if defective.
• OBD-II scan tool
• Multimeter
• Basic hand tools
$100 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Ford F-150
• Regularly inspect cooling fan and wiring.
• Ensure fan relay is functioning properly.
• Keep engine compartment clean to prevent overheating.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving long distances until the issue is resolved.
Cooling fan components may be covered under the vehicle's powertrain warranty. Check with the manufacturer or dealership for specific coverage.
The P0495 code has been known to occur in vehicles with high mileage or those that operate in extreme temperature conditions.
Moderate – The vehicle can still be driven, but the issue should be addressed to prevent potential overheating or electrical issues.
Driving with a malfunctioning cooling fan can lead to engine overheating, which may cause engine damage. It is advisable to address this issue promptly.
• Engine at operating temperature
• Vehicle parked with ignition on
The cooling fan is usually located at the front of the engine bay, behind the radiator.
Q: Can I drive with a P0495 code?
A: While you can drive with this code, it's best to get it fixed soon to avoid engine overheating.
Q: What happens if I ignore the P0495 code?
A: Ignoring the code could lead to engine overheating and potential engine damage.
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