P067C 2018 Chevrolet Silverado Code - Cylinder 5 Glow Plug Control Circuit Low Voltage
Quick Answer
The diagnostic trouble code P067C for a 2018 Chevrolet Silverado indicates a problem with the glow plug control circuit in cylinder 5. Common causes include Faulty glow plug: A defective glow plug in cylinder 5 can cause low voltage in the control circuit, Wiring issues: Damaged or corroded wiring connections can disrupt the flow of voltage to the glow plug, Glow plug control module failure: A malfunctioning control module can result in low voltage to the glow plug. 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
- P067C 2018 Chevrolet Silverado indicates Cylinder 5 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug: A defective glow plug in cylinder 5 can cause low voltage in the control circuit, Wiring issues: Damaged or corroded wiring connections can disrupt the flow of voltage to the glow plug, Glow plug control module failure: A malfunctioning control module can result in low voltage to the glow plug.
- 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 P067C 2018 Chevrolet Silverado Description
The diagnostic trouble code P067C for a 2018 Chevrolet Silverado indicates a problem with the glow plug control circuit in cylinder 5. Glow plugs are essential components in diesel engines that help with cold starts by heating the air in the combustion chamber. When the engine is cold, the glow plug control module sends a signal to the glow plugs to heat up, aiding in the combustion process. In this case, the low voltage in the control circuit of cylinder 5 suggests that there may be an issue with the glow plug or its control system.
Common Causes of P067C 2018 Chevrolet Silverado
- Faulty glow plug: A defective glow plug in cylinder 5 can cause low voltage in the control circuit.
- Wiring issues: Damaged or corroded wiring connections can disrupt the flow of voltage to the glow plug.
- Glow plug control module failure: A malfunctioning control module can result in low voltage to the glow plug.
- ECM (Engine Control Module) failure: A problem with the ECM can also lead to issues with the glow plug control circuit.
- Poor electrical connection: Loose or poor electrical connections can cause voltage drops in the circuit.
Symptoms of P067C 2018 Chevrolet Silverado
- Hard starting: Difficulty starting the engine, especially in cold weather.
- Rough idling: The engine may run unevenly or shake at idle.
- Decreased fuel efficiency: The vehicle may consume more fuel than usual.
- Engine misfires: Cylinder 5 may not fire correctly, leading to performance issues.
- Check Engine Light: The illumination of the Check Engine Light on the dashboard.
How to Fix P067C 2018 Chevrolet Silverado
- Diagnose the issue: Use a diagnostic scanner to confirm the P067C code and pinpoint the exact cause of the problem.
- Inspect glow plug: Check the condition of the glow plug in cylinder 5 to see if it needs replacement.
- Check wiring: Inspect the wiring harness and connections for any damage or corrosion, repairing or replacing as necessary.
- Test glow plug control module: Test the glow plug control module to ensure it is functioning correctly.
- Clear codes: After making repairs, clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.
Cost to Fix P067C 2018 Chevrolet Silverado
The cost of repairing a cylinder 5 glow plug control circuit low voltage issue can vary depending on the specific cause of the problem. On average, replacing a glow plug can cost between $50 and $150 per plug, while 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. Overall, the total repair cost for this issue may range from $200 to $800. It's important to note that these are rough estimates, and actual costs may vary based on the location, vehicle make and model, and other factors. It's recommended to consult with a qualified mechanic for a more accurate cost estimate.
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