P0673 2015 Chevrolet Silverado Code - Cylinder 3 Glow Plug Circuit Fault
Quick Answer
The P0673 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a fault in the glow plug circuit of cylinder 3. Common causes include Faulty glow plug in cylinder 3, Defective glow plug control module, Damaged wiring harness or connections. 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 2015 Chevrolet Silverado indicates Cylinder 3 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 3, Defective glow plug control module, Damaged wiring harness or connections.
- 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.
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Code P0673 2015 Chevrolet Silverado Description
The P0673 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a fault in the glow plug circuit of cylinder 3. Glow plugs are essential components in diesel engines, as they heat the combustion chamber to facilitate cold starts. When the engine is cold, the glow plugs heat up to ensure proper ignition of the fuel-air mixture. In this case, a fault in the glow plug circuit of cylinder 3 means that there is an issue with the electrical system responsible for powering the glow plug in that specific cylinder.
Common Causes of P0673 2015 Chevrolet Silverado
- Faulty glow plug in cylinder 3.
- Defective glow plug control module.
- Damaged wiring harness or connections.
- Issues with the engine control module (ECM).
- Corrosion or poor electrical connections in the glow plug circuit.
Symptoms of P0673 2015 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or engine misfires.
- Decreased fuel efficiency.
- Increased emissions.
- Illumination of the check engine light on the dashboard.
How to Fix P0673 2015 Chevrolet Silverado
- Begin by diagnosing the specific cause of the fault using a scan tool to confirm the P0673 code and pinpoint the exact issue.
- Inspect the glow plug in cylinder 3 for any signs of damage or malfunction. Replace the glow plug if necessary.
- Check the glow plug control module and wiring harness for any faults or damage. Repair or replace as needed.
- Test the glow plug circuit for continuity and proper voltage supply. Ensure all connections are secure and free of corrosion.
- Clear the DTC and test the vehicle to verify that the issue has been resolved.
Cost to Fix P0673 2015 Chevrolet Silverado
The typical repair costs for addressing a cylinder 3 glow plug circuit fault in a 2015 Chevrolet Silverado can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the price of a new glow plug, potential replacement of the glow plug control module, and any necessary wiring repairs. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to inquire about local rates for a more accurate estimate.
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Frequently Asked Questions about P0673 2015 Chevrolet Silverado Code
What does the OBDII code P0673 mean on a 2015 Chevrolet Silverado?
The P0673 code indicates a fault in the glow plug circuit for cylinder 3, which may prevent proper pre-heating of the cylinder in cold conditions.
What are the symptoms of the P0673 code on a 2015 Chevrolet Silverado?
Symptoms can include difficulty starting the engine in cold weather, reduced fuel efficiency, rough idling, and an illuminated check engine light.
What causes the P0673 code on a 2015 Chevrolet Silverado?
Common causes include a failed glow plug for cylinder 3, damaged wiring or connectors in the glow plug circuit, or a malfunctioning glow plug control module.
Can I drive my 2015 Chevrolet Silverado with a P0673 code?
Yes, you can drive the vehicle, but it may have difficulty starting in cold weather and could experience decreased performance. It’s best to address the issue promptly.
How can I troubleshoot the P0673 code on my 2015 Chevrolet Silverado?
Start by inspecting the glow plug and its wiring for damage. Use a multimeter to test the resistance of the glow plug, and check for proper voltage at the circuit.
What is the cost to repair the P0673 code on a 2015 Chevrolet Silverado?
The cost depends on the exact issue, but replacing a single glow plug typically costs between $50 and $150, while repairing wiring or replacing the control module could cost more.
How do I replace the cylinder 3 glow plug on a 2015 Chevrolet Silverado?
Disconnect the battery, locate cylinder 3, remove the old glow plug using a socket wrench, and install a new one. Be sure to torque it to the manufacturer’s specifications.
What happens if I ignore the P0673 code on my 2015 Chevrolet Silverado?
Ignoring the code can lead to poor engine performance, increased emissions, and potential damage to the glow plug control module or related components over time.
Can a faulty glow plug control module cause the P0673 code?
Yes, a malfunctioning glow plug control module can prevent proper operation of the cylinder 3 glow plug, triggering the P0673 code.
How can I prevent the P0673 code from recurring on my 2015 Chevrolet Silverado?
Regular maintenance, including inspecting glow plugs and their wiring, can help prevent this code. Use high-quality replacement parts and follow the manufacturer’s recommendations.
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