P066B 2015 Chevrolet Silverado Code - Cylinder 1 Glow Plug Control Circuit High Voltage
Quick Answer
The P066B diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a problem with the Cylinder 1 Glow Plug Control Circuit High Voltage. Common causes include Faulty glow plug in Cylinder 1, Wiring issues such as shorts or open circuits, 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
- P066B 2015 Chevrolet Silverado indicates Cylinder 1 Glow Plug Control Circuit High Voltage.
- Common causes
- Common causes include Faulty glow plug in Cylinder 1, Wiring issues such as shorts or open circuits, 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 P066B 2015 Chevrolet Silverado Description
The P066B diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a problem with the Cylinder 1 Glow Plug Control Circuit High Voltage. Glow plugs are essential components in diesel engines, as they heat the combustion chamber to aid in cold starting. When the engine is cold, the glow plugs heat up to ensure proper ignition of the fuel-air mixture. The control circuit is responsible for managing the operation of the glow plug in Cylinder 1.
Common Causes of P066B 2015 Chevrolet Silverado
- Faulty glow plug in Cylinder 1
- Wiring issues such as shorts or open circuits
- Malfunctioning glow plug control module
- Corrosion or poor connections in the electrical system
- Engine temperature sensor malfunction affecting glow plug operation
Symptoms of P066B 2015 Chevrolet Silverado
- Hard starting or extended cranking time
- Rough idling or misfiring
- Decreased fuel efficiency
- Illumination of the check engine light
- Engine performance issues, especially in cold weather
How to Fix P066B 2015 Chevrolet Silverado
- Begin by diagnosing the specific cause of the high voltage in the Cylinder 1 glow plug control circuit using a diagnostic scanner.
- Inspect the glow plug in Cylinder 1 for proper operation and replace if necessary.
- Check the wiring harness for any damage, shorts, or open circuits, and repair or replace as needed.
- Test the glow plug control module for functionality and replace if it is found to be faulty.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P066B 2015 Chevrolet Silverado
The cost of repairing a Cylinder 1 Glow Plug Control Circuit High Voltage issue in a 2015 Chevrolet Silverado can vary depending on the specific cause of the problem. Typically, the cost of replacing a glow plug ranges from $50 to $150 per plug, while the cost of a glow plug control module can range from $100 to $300. Labor costs at auto repair shops can range from $80 to $150 per hour, with the total repair cost estimated to be between $200 and $500. It is advisable to consult with a qualified mechanic to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle.
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