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P067B Chevrolet Code - Cylinder 4 Glow Plug Control Circuit High Voltage

Quick Answer

The P067B diagnostic trouble code for Chevrolet vehicles indicates an issue with the glow plug control circuit for cylinder 4. Common causes include Faulty glow plug control module, Wiring issues in the glow plug control circuit, Corrosion or poor connections in the glow plug 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
P067B Chevrolet indicates Cylinder 4 Glow Plug Control Circuit High Voltage.
Common causes
Common causes include Faulty glow plug control module, Wiring issues in the glow plug control circuit, Corrosion or poor connections in the glow plug 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P067B Chevrolet Description

The P067B diagnostic trouble code for Chevrolet vehicles indicates an issue with the glow plug control circuit for cylinder 4. Glow plugs are essential components in diesel engines that help with cold starts by heating the combustion chamber when the engine is cold. When the engine is started, the glow plug control module sends a high voltage signal to the glow plugs to heat them up, ensuring proper ignition of the fuel.

OBDII Code P067B Chevrolet - Cylinder 4 Glow Plug Control Circuit High Voltage
P067B Chevrolet Code - Cylinder 4 Glow Plug Control Circuit High Voltage

Common Causes of P067B Chevrolet

  1. Faulty glow plug control module
  2. Wiring issues in the glow plug control circuit
  3. Corrosion or poor connections in the glow plug circuit
  4. Faulty glow plug in cylinder 4
  5. Electrical issues in the vehicle's electrical system

Symptoms of P067B Chevrolet

  1. Hard starting or slow cranking
  2. Rough idling or misfires
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Illumination of the check engine light

How to Fix P067B Chevrolet

  1. Begin by performing a visual inspection of the glow plug control module, wiring, and connections for any signs of damage or corrosion.
  2. Use a multimeter to check the voltage readings in the glow plug control circuit for cylinder 4 to determine if the voltage is indeed high.
  3. Test the glow plug in cylinder 4 to ensure it is functioning correctly. Replace it if necessary.
  4. If the issue persists, replace the glow plug control module to correct the high voltage readings in the circuit.
  5. Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P067B Chevrolet

The cost estimate for repairing the Cylinder 4 Glow Plug Control Circuit High Voltage issue can vary depending on the specific cause of the problem. On average, the cost of parts for replacing a glow plug control module or glow plug can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue can range from $150 to $500. It's important to note that these are rough estimates, and actual costs can vary based on the vehicle's make and model, the location of the repair shop, and the extent of the repairs needed. It is recommended to consult with a trusted mechanic or repair shop for a more accurate cost estimate.

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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.

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