P0495 Chevrolet Code - Fan Speed High
Quick Answer
The cooling fan relay sends a Pulse Width Modulation (PWM) signal of 12 - 14 volts to the cooling fan clutch through the cooling fan clutch solenoid voltage control circuit. Common causes include Faulty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay circuit poor electrical connection. 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
- P0495 Chevrolet indicates Fan Speed High.
- Common causes
- Common causes include Faulty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay circuit poor electrical connection.
- 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.
Code P0495 Chevrolet Description
What are the Possible Causes of the DTC P0495 Chevrolet?
- Faulty Cooling Fan Relay
- Cooling Fan Relay harness is open or shorted
- Cooling Fan Relay circuit poor electrical connection
- Faulty cooling fan clutch
- Faulty control unit
How to Fix the DTC P0495 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0495 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0495 Chevrolet code?
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Information for Specific Chevrolet Models
- P0495 2014 Chevrolet Silverado — Fan Speed High
- P0495 2015 Chevrolet Silverado — Fan Speed High
- P0495 2016 Chevrolet Silverado — Fan Speed High
- P0495 2017 Chevrolet Silverado — Fan Speed High
- P0495 2018 Chevrolet Silverado — Fan Speed High
Frequently Asked Questions about P0495 Chevrolet Code
1. What does the OBDII code P0495 mean on a Chevrolet?
P0495 indicates that the engine control module (ECM) has detected the cooling fan running at an excessively high speed, beyond the expected range.
2. What are the common symptoms of the P0495 code on a Chevrolet?
Symptoms may include a loud fan noise, poor fuel economy, engine overheating in some cases, or the check engine light turning on.
3. What causes the P0495 code to appear on a Chevrolet?
Common causes include a faulty cooling fan resistor, a shorted cooling fan relay, damaged wiring, or a malfunctioning cooling fan motor.
4. Can I drive my Chevrolet with a P0495 code?
Driving with this code is generally safe for short distances, but prolonged driving may lead to cooling system issues or excessive fan wear, so repairs should be addressed promptly.
5. How is the P0495 code diagnosed on a Chevrolet?
A mechanic will inspect the cooling fan circuit, test the cooling fan relay and resistor, and check the wiring for damage or shorts using a multimeter and a scan tool.
6. What repairs are needed to fix the P0495 code on a Chevrolet?
Repairs may include replacing the cooling fan resistor, cooling fan relay, or fan motor, and repairing or replacing damaged wiring.
7. How much does it cost to fix a P0495 code on a Chevrolet?
Repair costs vary but typically range from $100 to $300 depending on whether the issue is a relay, resistor, or fan motor replacement.
8. Can a faulty ECM cause the P0495 code on a Chevrolet?
While rare, a malfunctioning ECM could potentially cause the code, but this is usually a last resort after all other components have been tested.
9. Will clearing the P0495 code with a scan tool fix the problem?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from reappearing.
10. How can I prevent the P0495 code from occurring on my Chevrolet?
Regular maintenance of the cooling system, including inspecting wiring and replacing worn components, can help prevent this issue.
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