P066D 2017 Chevrolet Silverado Code - Cylinder 2 Glow Plug Control Circuit High Voltage
Quick Answer
The P066D code on a 2017 Chevrolet Silverado indicates a problem with the Cylinder 2 Glow Plug Control Circuit experiencing high voltage. Common causes include Faulty glow plug in Cylinder 2, Damaged wiring or connectors in the glow plug control circuit, Malfunctioning glow plug control module. 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
- P066D 2017 Chevrolet Silverado indicates Cylinder 2 Glow Plug Control Circuit High Voltage.
- Common causes
- Common causes include Faulty glow plug in Cylinder 2, Damaged wiring or connectors in the glow plug control circuit, Malfunctioning glow plug control module.
- 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 P066D 2017 Chevrolet Silverado Description
The P066D code on a 2017 Chevrolet Silverado indicates a problem with the Cylinder 2 Glow Plug Control Circuit experiencing high voltage. Glow plugs are crucial components in diesel engines, as they help heat the air in the combustion chamber for easier cold starts. When the control circuit for the glow plug in Cylinder 2 is registering high voltage, it means that there is an issue with the system's operation. This can lead to difficulties starting the engine, reduced fuel efficiency, increased emissions, and potential engine misfires.
Common Causes of P066D 2017 Chevrolet Silverado
- Faulty glow plug in Cylinder 2.
- Damaged wiring or connectors in the glow plug control circuit.
- Malfunctioning glow plug control module.
- Issues with the engine's computer system.
- Corrosion or buildup on the glow plug terminals.
Symptoms of P066D 2017 Chevrolet Silverado
- Difficulties starting the engine, especially in cold weather.
- Reduced fuel efficiency due to incomplete combustion.
- Engine misfires or rough idling.
- Illumination of the check engine light on the dashboard.
- Increased emissions due to incomplete combustion.
How to Fix P066D 2017 Chevrolet Silverado
- Begin by diagnosing the exact cause of the high voltage in the Cylinder 2 glow plug control circuit using a diagnostic scanner.
- Inspect the glow plug in Cylinder 2 to check for any signs of damage or wear. Replace the glow plug if necessary.
- Check the wiring and connectors in the glow plug control circuit for any damage or corrosion. Repair or replace as needed.
- Test the glow plug control module for proper functioning. Replace if found to be faulty.
- Clear the diagnostic trouble codes from the vehicle's computer system and test the vehicle to ensure that the issue has been resolved.
Cost to Fix P066D 2017 Chevrolet Silverado
The cost of repairing a Cylinder 2 Glow Plug Control Circuit High Voltage issue on a 2017 Chevrolet Silverado can vary depending on the specific cause of the problem. On average, the parts for this repair, including a new glow plug and any necessary wiring or connectors, can range from $50 to $200. Labor costs typically range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. Overall, you can expect to pay anywhere from $150 to $500 for this repair. However, it's essential to consult with a trusted mechanic or repair shop for a more accurate estimate based on your vehicle's specific needs and location.
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