Engine-CodesDodge – P0672 Dodge

P0672 Dodge Code - Cylinder 2 Glow Plug Circuit Fault

Quick Answer

The P0672 diagnostic trouble code (DTC) for Dodge vehicles specifically indicates a fault in the glow plug circuit of cylinder 2. Common causes include Faulty glow plug in cylinder 2, Wiring issues such as a short or open circuit, Faulty glow plug relay. 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 Dodge indicates Cylinder 2 Glow Plug Circuit Fault.
Common causes
Common causes include Faulty glow plug in cylinder 2, Wiring issues such as a short or open circuit, Faulty glow plug relay.
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 Sep 12, 2024
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Code P0672 Dodge Description

The P0672 diagnostic trouble code (DTC) for Dodge vehicles specifically indicates a fault in the glow plug circuit of cylinder 2. Glow plugs are crucial components in diesel engines that aid in the cold start process by heating the air in the combustion chamber. When the engine is cold, the glow plugs ignite to ensure proper ignition of the fuel-air mixture.

OBDII Code P0672 Dodge - Cylinder 2 Glow Plug Circuit Fault
P0672 Dodge Code - Cylinder 2 Glow Plug Circuit Fault

Common Causes of P0672 Dodge

  1. Faulty glow plug in cylinder 2.
  2. Wiring issues such as a short or open circuit.
  3. Faulty glow plug relay.
  4. Corrosion or loose connections in the glow plug circuit.
  5. ECM (Engine Control Module) failure.

Symptoms of P0672 Dodge

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or misfiring.
  3. Reduced engine power or acceleration.
  4. Increase in smoke emissions from the exhaust.
  5. Illumination of the check engine light on the dashboard.

How to Fix P0672 Dodge

  1. Diagnose the specific cause of the fault by using a scan tool to read the DTC and perform electrical tests on the glow plug circuit.
  2. Inspect the glow plug in cylinder 2 to check for proper functionality and replace if necessary.
  3. Check the wiring and connections in the glow plug circuit for any damage, corrosion, or loose connections and repair as needed.
  4. Test the glow plug relay to ensure it is functioning correctly and replace if faulty.
  5. Clear the DTC from the ECM memory and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0672 Dodge

The cost of repairing a cylinder 2 glow plug circuit fault can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing a single glow plug can range from $50 to $150, while the cost of a glow plug relay can range from $50 to $200. Labor costs can range from $100 to $300, depending on the complexity of the repair. Overall, the total repair cost for this issue could range from $200 to $700. It's advisable to consult with a certified mechanic or auto repair shop for an accurate estimate based on your vehicle's make and model.

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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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