Engine-CodesChevrolet – P0673 2014 Chevrolet Silverado

P0673 2014 Chevrolet Silverado Code - Cylinder 3 Glow Plug Circuit Fault

Quick Answer

The diagnostic trouble code P0673 for a 2014 Chevrolet Silverado indicates a fault in the glow plug circuit of cylinder 3. Common causes include Faulty glow plug in cylinder 3, Wiring or connection issues in the glow plug 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
P0673 2014 Chevrolet Silverado indicates Cylinder 3 Glow Plug Circuit Fault.
Common causes
Common causes include Faulty glow plug in cylinder 3, Wiring or connection issues in the glow plug 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.
Table of contents Created and updated by William Orellana on Sep 29, 2024
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Code P0673 2014 Chevrolet Silverado Description

The diagnostic trouble code P0673 for a 2014 Chevrolet Silverado indicates a fault in the glow plug circuit of cylinder 3. Glow plugs are essential components in diesel engines that help with cold starts by heating the combustion chamber. When the engine is cold, the glow plug warms up the air in the cylinder, making it easier for the diesel fuel to ignite. A faulty glow plug in cylinder 3 can lead to difficulties starting the engine, especially in cold weather conditions.

OBDII Code P0673 2014 Chevrolet Silverado - Cylinder 3 Glow Plug Circuit Fault
P0673 2014 Chevrolet Silverado Code - Cylinder 3 Glow Plug Circuit Fault

Common Causes of P0673 2014 Chevrolet Silverado

  1. Faulty glow plug in cylinder 3.
  2. Wiring or connection issues in the glow plug circuit.
  3. Malfunctioning glow plug control module.
  4. Corrosion or damage to the electrical connections.
  5. Issues with the engine control module (ECM) sending incorrect signals to the glow plug.

Symptoms of P0673 2014 Chevrolet Silverado

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or vibrations when the engine is running.
  3. Decreased fuel efficiency.
  4. Engine misfires.
  5. Illumination of the check engine light on the dashboard.

How to Fix P0673 2014 Chevrolet Silverado

  1. Begin by diagnosing the specific issue by using a diagnostic scanner to confirm the P0673 code and pinpoint the faulty glow plug in cylinder 3.
  2. Inspect the wiring and connections in the glow plug circuit for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the glow plug control module to ensure it is functioning correctly. Replace if found to be faulty.
  4. Replace the faulty glow plug in cylinder 3 with a new one, ensuring it is properly installed and connected.
  5. Clear the diagnostic trouble codes from the vehicle's ECM and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0673 2014 Chevrolet Silverado

The typical repair costs for addressing a cylinder 3 glow plug circuit fault in a 2014 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, 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. It's recommended to check with local auto repair shops for a more accurate estimate based on your specific circumstances. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable pricing.

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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 P0673 2014 Chevrolet Silverado Code

1. What does the OBDII code P0673 mean on a 2014 Chevrolet Silverado?

P0673 indicates a fault in the glow plug circuit for cylinder 3, meaning the glow plug is not functioning as expected or there is an issue with the circuit.

2. What are the symptoms of a P0673 code in a 2014 Chevrolet Silverado?

Common symptoms include rough cold starts, reduced engine performance in cold weather, and the check engine light being illuminated.

3. What causes a P0673 code on a 2014 Chevrolet Silverado?

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

4. Can I drive my 2014 Chevrolet Silverado with a P0673 code?

Yes, you can drive the truck, but it may struggle to start in cold weather and may experience reduced fuel efficiency and performance. It’s best to address the issue promptly.

5. How do I diagnose a P0673 code on my 2014 Chevrolet Silverado?

Diagnosis involves checking the glow plug for cylinder 3, inspecting the wiring and connectors for damage or corrosion, and testing the glow plug control module for proper operation.

6. How do I fix a P0673 code on a 2014 Chevrolet Silverado?

Fixes may include replacing the faulty glow plug, repairing damaged wiring or connectors, cleaning corroded connections, or replacing the glow plug control module.

7. How much does it cost to repair a P0673 code on a 2014 Chevrolet Silverado?

The cost can vary but typically ranges from $50 to $150 for a glow plug replacement, plus labor if you’re not doing the repair yourself.

8. Can a bad glow plug cause other engine problems?

Yes, a bad glow plug can lead to hard starts, increased emissions, and reduced engine performance, especially in cold weather.

9. What tools are needed to fix a P0673 code on a 2014 Chevrolet Silverado?

You’ll need a diagnostic scanner, a multimeter for testing the circuit, and basic hand tools like a socket set to replace the glow plug.

10. How can I prevent a P0673 code from recurring?

Regular maintenance, inspecting the glow plug system for wear or corrosion, and using high-quality replacement parts can help prevent this code from occurring again.

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