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P068D Chevrolet Code - Cylinder 7 Glow Plug Control Circuit High Voltage

Quick Answer

The P068D code for Chevrolet vehicles indicates an issue with the Cylinder 7 Glow Plug Control Circuit having high voltage. Common causes include Faulty glow plug in cylinder 7, Damaged wiring harness or connector 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
P068D Chevrolet indicates Cylinder 7 Glow Plug Control Circuit High Voltage.
Common causes
Common causes include Faulty glow plug in cylinder 7, Damaged wiring harness or connector 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P068D Chevrolet Description

The P068D code for Chevrolet vehicles indicates an issue with the Cylinder 7 Glow Plug Control Circuit having high voltage. Glow plugs are essential components in diesel engines that help with cold starts by heating the combustion chamber. When this code appears, it means that the control circuit for the glow plug in cylinder 7 is experiencing a voltage level that is higher than normal, which can lead to various performance issues.

OBDII Code P068D Chevrolet - Cylinder 7 Glow Plug Control Circuit High Voltage
P068D Chevrolet Code - Cylinder 7 Glow Plug Control Circuit High Voltage

Common Causes of P068D Chevrolet

  1. Faulty glow plug in cylinder 7.
  2. Damaged wiring harness or connector in the glow plug control circuit.
  3. Malfunctioning glow plug control module.
  4. Issues with the engine's electrical system.
  5. Corrosion or poor connections in the glow plug circuit.

Symptoms of P068D Chevrolet

  1. Difficulty starting the engine, especially in cold weather.
  2. Reduced engine performance and power output.
  3. Increased fuel consumption.
  4. Engine misfires or rough idling.
  5. Illumination of the check engine light on the dashboard.

How to Fix P068D Chevrolet

  1. Perform a thorough diagnostic scan to retrieve the specific trouble code and pinpoint the issue.
  2. Inspect the glow plug in cylinder 7 for any signs of damage or malfunction.
  3. Check the wiring harness and connector in the glow plug control circuit for any corrosion or damage.
  4. Test the glow plug control module to determine if it is functioning correctly.
  5. Replace any faulty components, such as the glow plug, wiring harness, connector, or control module, as needed.

Cost to Fix P068D Chevrolet

The typical repair costs for addressing the P068D code in a Chevrolet vehicle can range from $200 to $500, including parts and labor. However, it is important to note that the 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. Auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships. It is recommended to obtain quotes from local shops to get a more accurate estimate for the repair.

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Information for Specific Chevrolet Models

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.

Frequently Asked Questions about P068D Chevrolet Code

1. What are the common symptoms of OBDII code P068D in a Chevrolet related to the Cylinder 7 Glow Plug Control Circuit High Voltage?

Symptoms may include rough idling, misfires, decreased fuel efficiency, and the illumination of the check engine light.

2. What could be causing the Cylinder 7 Glow Plug Control Circuit High Voltage error code in a Chevrolet?

Possible causes include a faulty glow plug, damaged wiring or connectors, a malfunctioning glow plug control module, or a problem with the engine control module (ECM).

3. How can I diagnose the issue causing the P068D code in a Chevrolet Cylinder 7 Glow Plug Control Circuit High Voltage?

Diagnosis usually involves checking the glow plug, inspecting the wiring and connectors for damage, testing the glow plug control module, and scanning the ECM for any related faults.

4. Can I drive my Chevrolet with the P068D code related to Cylinder 7 Glow Plug Control Circuit High Voltage?

It is not recommended to drive the vehicle with this code active, as it can lead to further engine damage and decreased performance.

5. What is the typical repair process for fixing the P068D code in a Chevrolet Cylinder 7 Glow Plug Control Circuit High Voltage?

Repair often involves replacing the faulty glow plug, repairing any damaged wiring or connectors, or replacing the glow plug control module if necessary.

6. Are there any DIY tips for addressing the P068D code in a Chevrolet Cylinder 7 Glow Plug Control Circuit High Voltage?

While basic checks like inspecting wiring connections can be done at home, it's recommended to consult a professional mechanic for a thorough diagnosis and repair.

7. Is the P068D code in a Chevrolet related to Cylinder 7 Glow Plug Control Circuit High Voltage a serious issue?

Yes, this code should be addressed promptly to prevent potential engine damage and ensure optimal vehicle performance.

8. Can resetting the ECM clear the P068D code in a Chevrolet Cylinder 7 Glow Plug Control Circuit High Voltage?

Resetting the ECM may temporarily clear the code, but it will likely reappear if the underlying issue causing the fault is not addressed.

9. How much does it typically cost to repair the P068D code related to Cylinder 7 Glow Plug Control Circuit High Voltage in a Chevrolet?

Costs can vary depending on the exact cause of the issue, but repairs may range from a few hundred to over a thousand dollars, including parts and labor.

10. Are there any recalls or technical service bulletins related to the P068D code in a Chevrolet Cylinder 7 Glow Plug Control Circuit High Voltage?

It's advisable to check with a Chevrolet dealership or online resources for any relevant recalls or technical service bulletins that may apply to your specific vehicle model and year.

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