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P067D 2016 Chevrolet Silverado Code - Cylinder 5 Glow Plug Control Circuit High Voltage

Quick Answer

The P067D diagnostic trouble code (DTC) indicates that the Engine Control Module (ECM) has detected a high voltage condition in the glow plug control circuit for cylinder 5. Common causes include Faulty Glow Plug: A malfunctioning glow plug that may be shorted or open, Damaged Wiring: Frayed or damaged wiring in the glow plug circuit leading to high voltage readings, Faulty ECM: A malfunctioning Engine Control Module that misreads the voltage levels. 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
P067D 2016 Chevrolet Silverado indicates Cylinder 5 Glow Plug Control Circuit High Voltage.
Common causes
Common causes include Faulty Glow Plug: A malfunctioning glow plug that may be shorted or open, Damaged Wiring: Frayed or damaged wiring in the glow plug circuit leading to high voltage readings, Faulty ECM: A malfunctioning Engine Control Module that misreads the voltage levels.
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 Oct 06, 2024
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Code P067D 2016 Chevrolet Silverado Description

The P067D diagnostic trouble code (DTC) indicates that the Engine Control Module (ECM) has detected a high voltage condition in the glow plug control circuit for cylinder 5. Glow plugs are essential components in diesel engines, designed to preheat the combustion chamber for easier starting, especially in cold weather. When the ECM identifies that the voltage in the control circuit exceeds the expected range, it triggers this code.

OBDII Code P067D 2016 Chevrolet Silverado - Cylinder 5 Glow Plug Control Circuit High Voltage
P067D 2016 Chevrolet Silverado Code - Cylinder 5 Glow Plug Control Circuit High Voltage

Common Causes of P067D 2016 Chevrolet Silverado

  1. Faulty Glow Plug: A malfunctioning glow plug that may be shorted or open.
  2. Damaged Wiring: Frayed or damaged wiring in the glow plug circuit leading to high voltage readings.
  3. Faulty ECM: A malfunctioning Engine Control Module that misreads the voltage levels.
  4. Poor Ground Connection: Inadequate grounding in the electrical system affecting voltage readings.
  5. Corroded Connectors: Corrosion at the connectors can lead to poor electrical connections and high voltage readings.

Symptoms of P067D 2016 Chevrolet Silverado

  1. Hard Starting: Difficulty starting the engine, especially in cold weather.
  2. Rough Idling: The engine may run unevenly or shake when idling.
  3. Increased Emissions: Noticeable increase in exhaust smoke or emissions.
  4. Check Engine Light: The illumination of the check engine light on the dashboard.
  5. Decreased Fuel Efficiency: A noticeable drop in miles per gallon (MPG) due to incomplete combustion.

How to Fix P067D 2016 Chevrolet Silverado

  1. Diagnostic Testing: Begin with a thorough diagnostic to confirm the P067D code and check for any additional codes that may provide further insight.
  2. Visual Inspection: Inspect the wiring and connectors associated with the glow plug circuit for any signs of damage, corrosion, or loose connections.
  3. Glow Plug Replacement: If the glow plug is found to be faulty, replace it with a new one to restore proper function.
  4. Repair Wiring: If damaged wiring is identified, repair or replace the affected sections to ensure proper electrical flow.
  5. ECM Reprogramming or Replacement: If the ECM is determined to be at fault, it may require reprogramming or replacement to rectify the high voltage issue.

Cost to Fix P067D 2016 Chevrolet Silverado

The cost to repair a P067D code can vary widely based on the specific issue identified during diagnosis. On average, you can expect to pay between $200 and $600 for parts and labor. This estimate includes the cost of a new glow plug, any necessary wiring repairs, and labor charges. Labor rates typically range from $80 to $150 per hour, depending on the shop's location and type. Metropolitan areas or dealerships may charge higher rates, while independent shops may offer more competitive pricing. It's advisable to consult local repair shops for more precise estimates based on your specific vehicle and location.

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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.

Frequently Asked Questions about P067D 2016 Chevrolet Silverado Code

1. What does the OBDII code P067D mean on a 2016 Chevrolet Silverado?

P067D indicates a high voltage issue in the glow plug control circuit for cylinder 5, which is essential for proper engine operation in cold conditions.

2. What are the symptoms of code P067D on a 2016 Chevrolet Silverado?

Common symptoms include difficulty starting in cold weather, increased exhaust smoke during startup, and reduced engine performance.

3. What causes the P067D code on a 2016 Chevrolet Silverado?

Possible causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, or a malfunctioning glow plug control module.

4. Can I drive my 2016 Chevrolet Silverado with code P067D?

While the truck may still run, driving with this code can lead to poor cold starts and increased engine wear over time. It’s best to address the issue promptly.

5. How do I diagnose the P067D code on a 2016 Chevrolet Silverado?

Start by inspecting the wiring and connectors for cylinder 5’s glow plug, testing the glow plug itself, and checking the glow plug control module for faults.

6. How do I fix the P067D code on a 2016 Chevrolet Silverado?

Repairs may involve replacing the faulty glow plug, repairing damaged wiring or connectors, or replacing the glow plug control module if necessary.

7. How much does it cost to repair the P067D code on a 2016 Chevrolet Silverado?

Repair costs vary but typically range from $100 to $300, depending on whether the glow plug, wiring, or control module needs replacement.

8. What tools are needed to fix the P067D code on a 2016 Chevrolet Silverado?

You’ll need a multimeter to test electrical connections, a socket set for removing the glow plug, and possibly a scan tool to clear the code after repairs.

9. Can a bad glow plug cause other issues in a 2016 Chevrolet Silverado?

Yes, a faulty glow plug can lead to hard starts, increased emissions, and reduced fuel efficiency, especially in cold weather.

10. How do I prevent the P067D code from recurring on my 2016 Chevrolet Silverado?

Regular maintenance, including inspecting glow plugs and their wiring, can help prevent issues and ensure reliable cold-weather performance.

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