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P0672 2016 Chevrolet Silverado Code - Cylinder 2 Glow Plug Circuit Fault

Quick Answer

The P0672 diagnostic trouble code (DTC) specifically relates to a fault in the cylinder 2 glow plug circuit in a 2016 Chevrolet Silverado. Common causes include Faulty glow plug in cylinder 2, Damaged wiring or connectors in the glow plug circuit, Corrosion or poor connections in the 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
P0672 2016 Chevrolet Silverado indicates Cylinder 2 Glow Plug Circuit Fault.
Common causes
Common causes include Faulty glow plug in cylinder 2, Damaged wiring or connectors in the glow plug circuit, Corrosion or poor connections in the 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 13, 2024
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Code P0672 2016 Chevrolet Silverado Description

The P0672 diagnostic trouble code (DTC) specifically relates to a fault in the cylinder 2 glow plug circuit in a 2016 Chevrolet Silverado. Glow plugs are essential components in diesel engines that help with cold starting by heating the combustion chamber to facilitate ignition. In this case, the code indicates that there is an issue with the glow plug circuit for cylinder 2, which can lead to difficulties starting the engine, reduced engine performance, increased emissions, and potential long-term damage if left unresolved.

OBDII Code P0672 2016 Chevrolet Silverado - Cylinder 2 Glow Plug Circuit Fault
P0672 2016 Chevrolet Silverado Code - Cylinder 2 Glow Plug Circuit Fault

Common Causes of P0672 2016 Chevrolet Silverado

  1. Faulty glow plug in cylinder 2.
  2. Damaged wiring or connectors in the glow plug circuit.
  3. Corrosion or poor connections in the circuit.
  4. Issues with the glow plug control module.
  5. Engine control module (ECM) failure.

Symptoms of P0672 2016 Chevrolet Silverado

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or misfires.
  3. Decreased fuel efficiency.
  4. Increased emissions.
  5. Engine stalling or hesitation during acceleration.

How to Fix P0672 2016 Chevrolet Silverado

  1. Use a diagnostic scan tool to confirm the P0672 code and identify the specific cylinder 2 glow plug circuit fault.
  2. Inspect the glow plug in cylinder 2 for proper operation and replace if necessary.
  3. Check the wiring and connectors in the glow plug circuit for damage or corrosion, repairing or replacing as needed.
  4. Test the glow plug control module and ECM for functionality, replacing if faulty.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0672 2016 Chevrolet Silverado

The typical repair costs for addressing a cylinder 2 glow plug circuit fault in a 2016 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, it's important to note that 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. 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.

Frequently Asked Questions about P0672 2016 Chevrolet Silverado Code

1. What does code P0672 mean on a 2016 Chevrolet Silverado?

Code P0672 indicates a Cylinder 2 Glow Plug Circuit Fault, meaning the glow plug or its circuit for cylinder 2 is malfunctioning.

2. What are the symptoms of the P0672 code?

Common symptoms include difficulty starting the engine in cold weather, reduced fuel efficiency, a check engine light, and rough idling.

3. What causes the P0672 code to appear?

The most common causes are a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a failed glow plug control module, or corrosion on electrical components.

4. Can I drive my 2016 Silverado with a P0672 code?

Yes, you can drive the vehicle, but it may have starting issues in cold weather and decreased performance. Prolonged driving without addressing the issue could lead to further damage.

5. How do I diagnose the P0672 code?

Start by checking the glow plug for cylinder 2 with a multimeter to verify resistance. Inspect the wiring and connectors for damage or corrosion, and test the glow plug control module for proper operation.

6. How do I fix the P0672 code on my Silverado?

Repairs may include replacing the faulty glow plug, repairing or replacing damaged wiring or connectors, or replacing the glow plug control module if it's defective.

7. How much does it cost to fix the P0672 code?

The cost typically ranges from $100 to $300, depending on whether just the glow plug is replaced or additional repairs, such as wiring fixes or module replacement, are needed.

8. Can a P0672 code cause long-term damage if ignored?

Yes, ignoring this code can lead to harder starts in cold weather, increased wear on the engine, and potential damage to other components like the cylinder or control module.

9. What tools do I need to troubleshoot the P0672 code?

You'll need a diagnostic scanner to read the code, a multimeter to test electrical components, and possibly basic hand tools for accessing the glow plug and wiring.

10. Is the P0672 code specific to cylinder 2?

Yes, this code is specific to the glow plug circuit for cylinder 2. If other cylinders have issues, different P06xx codes will be triggered.

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