P066C 2016 Chevrolet Silverado Code - Cylinder 2 Glow Plug Control Circuit Low Voltage
Quick Answer
The diagnostic trouble code P066C on a 2016 Chevrolet Silverado indicates a problem with the glow plug control circuit in cylinder 2. Common causes include Faulty glow plug in cylinder 2, Damaged glow plug control module, Wiring issues such as a short circuit or open circuit. 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 2016 Chevrolet Silverado indicates Cylinder 2 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug in cylinder 2, Damaged glow plug control module, Wiring issues such as a short circuit or open circuit.
- 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 2016 Chevrolet Silverado Description
The diagnostic trouble code P066C on a 2016 Chevrolet Silverado indicates a problem with the glow plug control circuit in cylinder 2. Glow plugs are essential components in diesel engines that help with cold starts by heating the combustion chamber. When the control circuit for the glow plug in cylinder 2 is experiencing low voltage, it can lead to issues with starting the engine, especially in cold weather conditions. This can result in rough idling, misfires, decreased fuel efficiency, and potentially even engine stalling.
Common Causes of P066C 2016 Chevrolet Silverado
- Faulty glow plug in cylinder 2.
- Damaged glow plug control module.
- Wiring issues such as a short circuit or open circuit.
- Problem with the engine control module (ECM).
Symptoms of P066C 2016 Chevrolet Silverado
- Difficulties starting the engine, especially in cold weather.
- Rough idling or vibrations when the engine is running.
- Decreased fuel efficiency.
- Engine misfires.
- Engine stalling.
How to Fix P066C 2016 Chevrolet Silverado
- Begin by diagnosing the specific cause of the low voltage in the glow plug control circuit for cylinder 2 using a diagnostic scanner.
- Inspect the glow plug in cylinder 2 for any signs of damage or wear and replace if necessary.
- Check the glow plug control module for any faults and replace if needed.
- Inspect the wiring harness for any shorts or open circuits and repair as required.
- If the issue persists, further diagnostics on the engine control module (ECM) may be necessary.
Cost to Fix P066C 2016 Chevrolet Silverado
The typical repair costs for addressing a cylinder 2 glow plug control circuit low voltage issue can vary depending on the specific cause and parts needed. On average, the cost of replacing a glow plug can range from $50 to $150 per plug, while the cost of a glow plug control module can range from $100 to $300. Labor costs can add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair. It's advisable to check with local auto repair shops for a more accurate estimate based on your location and vehicle.
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Frequently Asked Questions about P066C 2016 Chevrolet Silverado Code
What does the OBDII code P066C mean for a 2016 Chevrolet Silverado?
P066C indicates a low voltage issue in the glow plug control circuit for cylinder 2, which assists in starting the engine in cold conditions.
What are the symptoms of code P066C on a 2016 Chevrolet Silverado?
Common symptoms include difficulty starting the engine in cold weather, a check engine light, and reduced engine performance.
What causes the P066C code on a 2016 Chevrolet Silverado?
Potential causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a malfunctioning glow plug control module, or low battery voltage.
Can driving with code P066C damage my 2016 Chevrolet Silverado?
Driving with this code may cause cold starting issues and could lead to further damage if the glow plug system is neglected over time.
How do I diagnose the P066C code on a 2016 Chevrolet Silverado?
Start by inspecting the glow plug for cylinder 2, checking the wiring and connectors for damage, testing the glow plug control module, and verifying battery voltage.
How is the P066C code typically fixed on a 2016 Chevrolet Silverado?
Repairs may include replacing the glow plug for cylinder 2, repairing or replacing damaged wiring, or replacing the glow plug control module.
Is replacing the glow plug for cylinder 2 a DIY task for the P066C code?
If you have basic mechanical skills and tools, replacing the glow plug may be a DIY task, but diagnosing wiring or module issues may require professional assistance.
Can a weak battery trigger the P066C code on a 2016 Chevrolet Silverado?
Yes, low battery voltage can cause the glow plug circuit to receive insufficient power, leading to this code.
How do I reset the P066C code after repairs on my 2016 Chevrolet Silverado?
After repairs, use an OBDII scanner to clear the code. Ensure the issue is resolved to prevent the code from returning.
What tools do I need to address the P066C code on a 2016 Chevrolet Silverado?
You may need a multimeter for testing voltage, an OBDII scanner for diagnostics, and basic hand tools for replacing the glow plug or repairing wiring.
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