P0673 2018 Chevrolet Silverado Code - Cylinder 3 Glow Plug Circuit Fault
Quick Answer
The diagnostic trouble code P0673 for a 2018 Chevrolet Silverado indicates a fault in the glow plug circuit of cylinder 3. Common causes include Faulty glow plug in cylinder 3, Damaged wiring 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 2018 Chevrolet Silverado indicates Cylinder 3 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 3, Damaged wiring 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.
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Code P0673 2018 Chevrolet Silverado Description
The diagnostic trouble code P0673 for a 2018 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 air in the combustion chamber. When the engine is cold, the glow plugs heat up to ensure proper ignition of the fuel. In the case of cylinder 3, a malfunction in the glow plug circuit can lead to difficulties starting the engine, rough idling, decreased fuel efficiency, and potential engine misfires.
Common Causes of P0673 2018 Chevrolet Silverado
- Faulty glow plug in cylinder 3.
- Damaged wiring in the glow plug circuit.
- Malfunctioning glow plug control module.
- Poor electrical connection in the glow plug circuit.
- Corrosion or buildup on the glow plug terminals.
Symptoms of P0673 2018 Chevrolet Silverado
- Extended cranking times when starting the engine.
- Rough idling or engine vibrations.
- Decreased fuel efficiency.
- Excessive smoke from the exhaust.
- Potential engine misfires.
How to Fix P0673 2018 Chevrolet Silverado
- Begin by diagnosing the specific cause of the fault using a diagnostic scanner to pinpoint the issue in the glow plug circuit of cylinder 3.
- Inspect the glow plug in cylinder 3 for proper operation and replace it if necessary.
- Check the wiring in the glow plug circuit for any damage or corrosion, repairing or replacing as needed.
- Test the glow plug control module to ensure it is functioning correctly, replacing it if found to be faulty.
- Clear the diagnostic trouble code from the vehicle's computer and test the engine to ensure the issue has been resolved.
Cost to Fix P0673 2018 Chevrolet Silverado
The typical repair costs for addressing a cylinder 3 glow plug circuit fault in a 2018 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 advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
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