P068C 2018 Chevrolet Silverado Code - Cylinder 7 Glow Plug Control Circuit Low Voltage
Quick Answer
The P068C diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Cylinder 7 Glow Plug Control Circuit, specifically low voltage. Common causes include Faulty glow plug in Cylinder 7, Wiring issues, such as a short or open 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
- P068C 2018 Chevrolet Silverado indicates Cylinder 7 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug in Cylinder 7, Wiring issues, such as a short or open 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 P068C 2018 Chevrolet Silverado Description
The P068C diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Cylinder 7 Glow Plug Control Circuit, specifically low voltage. 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 plugs heat up to ensure proper ignition of the fuel-air mixture. The control circuit is responsible for managing the operation of the glow plugs, ensuring they receive the necessary voltage to function correctly.
Common Causes of P068C 2018 Chevrolet Silverado
- Faulty glow plug in Cylinder 7.
- Wiring issues, such as a short or open circuit.
- Malfunctioning glow plug control module.
- Poor electrical connection or corrosion in the circuit.
- Issues with the power supply to the glow plug control circuit.
Symptoms of P068C 2018 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or misfiring of the engine.
- Decreased fuel efficiency.
- Illumination of the Check Engine Light.
- Engine performance issues, such as reduced power or acceleration.
How to Fix P068C 2018 Chevrolet Silverado
- Begin by diagnosing the specific cause of the low voltage in the Cylinder 7 Glow Plug Control Circuit using a diagnostic scanner to retrieve the trouble codes and perform electrical testing.
- Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components as needed.
- Test the glow plug in Cylinder 7 to ensure it is functioning correctly. Replace the glow plug if it is faulty.
- Check the glow plug control module for proper operation. Replace the module if it is malfunctioning.
- Clear the trouble codes, reset the engine control module, and test the vehicle to ensure the issue has been resolved.
Cost to Fix P068C 2018 Chevrolet Silverado
The typical repair costs for addressing a Cylinder 7 Glow Plug Control Circuit Low Voltage issue in a 2018 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, the actual cost may vary depending on the specific cause of the problem, the cost of replacement parts, and the labor rates at the auto repair shop. It's recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on the individual circumstances of the vehicle. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to inquire about these factors before proceeding with the repair.
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