P066C 2015 Chevrolet Silverado Code - Cylinder 2 Glow Plug Control Circuit Low Voltage
Quick Answer
The diagnostic trouble code P066C in a 2015 Chevrolet Silverado indicates an issue with the cylinder 2 glow plug control circuit experiencing low 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
- P066C 2015 Chevrolet Silverado indicates Cylinder 2 Glow Plug Control Circuit Low 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 P066C 2015 Chevrolet Silverado Description
The diagnostic trouble code P066C in a 2015 Chevrolet Silverado indicates an issue with the cylinder 2 glow plug control circuit experiencing low voltage. Glow plugs are essential components in diesel engines, especially during cold starts, as they heat the combustion chamber to aid in ignition. When the control circuit for the glow plug in cylinder 2 is not receiving sufficient voltage, it can lead to difficulties in starting the engine, reduced fuel efficiency, and potential long-term damage to the engine.
Common Causes of P066C 2015 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 vehicle's electrical system or battery.
- Corrosion or poor connections in the circuit.
Symptoms of P066C 2015 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or engine misfires.
- Reduced engine power and acceleration.
- Increased fuel consumption.
- Illumination of the check engine light on the dashboard.
How to Fix P066C 2015 Chevrolet Silverado
- Begin by diagnosing the specific cause of the low voltage in the cylinder 2 glow plug control circuit using a diagnostic scanner.
- Inspect the glow plug in cylinder 2 for proper operation and replace if necessary.
- Check the wiring and connectors in the control circuit for any damage or corrosion, repairing or replacing as needed.
- Test the glow plug control module for functionality and replace if it is found to be faulty.
- Clear the diagnostic trouble code from the vehicle's computer and test the system to ensure proper operation.
Cost to Fix P066C 2015 Chevrolet Silverado
The typical repair costs for addressing a cylinder 2 glow plug control circuit low voltage issue in a 2015 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.
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