Engine-CodesChevrolet – P06C8 2017 Chevrolet Silverado

P06C8 2017 Chevrolet Silverado Code - Cylinder 4 Glow Plug Incorrect

Quick Answer

The P06C8 diagnostic trouble code (DTC) specifically pertains to the glow plug system in a 2017 Chevrolet Silverado, indicating that there is an issue with the glow plug associated with cylinder 4. Common causes include A faulty glow plug that is either burned out or has an internal short, Wiring issues, such as damaged or corroded connectors in the glow plug circuit, A malfunctioning Engine Control Module (ECM) that fails to send the correct signals 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
P06C8 2017 Chevrolet Silverado indicates Cylinder 4 Glow Plug Incorrect.
Common causes
Common causes include A faulty glow plug that is either burned out or has an internal short, Wiring issues, such as damaged or corroded connectors in the glow plug circuit, A malfunctioning Engine Control Module (ECM) that fails to send the correct signals 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.
Table of contents Created and updated by William Orellana on Oct 17, 2024
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Code P06C8 2017 Chevrolet Silverado Description

The P06C8 diagnostic trouble code (DTC) specifically pertains to the glow plug system in a 2017 Chevrolet Silverado, indicating that there is an issue with the glow plug associated with cylinder 4. Glow plugs are critical components in diesel engines, as they heat the combustion chamber to facilitate the ignition of the air-fuel mixture, especially in cold conditions. When the Engine Control Module (ECM) detects that the glow plug for cylinder 4 is either malfunctioning or not operating within the expected parameters, it triggers this code.

OBDII Code P06C8 2017 Chevrolet Silverado - Cylinder 4 Glow Plug Incorrect
P06C8 2017 Chevrolet Silverado Code - Cylinder 4 Glow Plug Incorrect

Common Causes of P06C8 2017 Chevrolet Silverado

  1. A faulty glow plug that is either burned out or has an internal short.
  2. Wiring issues, such as damaged or corroded connectors in the glow plug circuit.
  3. A malfunctioning Engine Control Module (ECM) that fails to send the correct signals to the glow plug.
  4. Poor fuel quality or contamination affecting combustion efficiency.
  5. Issues with the glow plug relay or fuse, preventing proper operation of the glow plug.

Symptoms of P06C8 2017 Chevrolet Silverado

  1. Difficulty starting the engine, particularly in cold weather.
  2. Rough idle or engine misfires, especially when the engine is cold.
  3. Increased exhaust smoke, which may be more pronounced during startup.
  4. Reduced engine power and acceleration.
  5. Check Engine Light (CEL) illuminated on the dashboard.

How to Fix P06C8 2017 Chevrolet Silverado

  1. Diagnostic Testing: Begin with a thorough diagnostic scan to confirm the P06C8 code and check for any additional codes that may provide further insight into the issue.
  2. Visual Inspection: Inspect the glow plug wiring harness for any signs of damage, corrosion, or loose connections that could affect the glow plug's operation.
  3. Glow Plug Replacement: If the glow plug is found to be faulty, replace it with a new unit designed for the specific engine model.
  4. Check ECM and Relay: Test the glow plug relay and ECM to ensure they are functioning correctly. Replace any components that are found to be defective.
  5. Clear Codes and Test Drive: After repairs, clear the diagnostic codes and perform a test drive to ensure that the issue has been resolved and that the engine is operating smoothly.

Cost to Fix P06C8 2017 Chevrolet Silverado

The typical repair costs for addressing a P06C8 code can vary widely depending on the specific repairs needed. For glow plug replacement, parts may range from $30 to $100 per glow plug, while labor costs can add an additional $80 to $150 per hour. If multiple glow plugs need replacement, the total cost could range from $200 to $600, including parts and labor. It is important to note that the specific diagnosis time and labor rates at auto repair shops can differ based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour; however, 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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