P0672 2018 Chevrolet Silverado Code - Cylinder 2 Glow Plug Circuit Fault
Quick Answer
The P0672 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a fault in the glow plug circuit for cylinder 2. Common causes include Faulty glow plug in cylinder 2, Damaged wiring harness connected to the glow plug, 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
- P0672 2018 Chevrolet Silverado indicates Cylinder 2 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 2, Damaged wiring harness connected to the glow plug, 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 P0672 2018 Chevrolet Silverado Description
The P0672 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a fault in the glow plug circuit for cylinder 2. Glow plugs are essential components in diesel engines, as they help to ignite the air-fuel mixture by heating up when the engine is cold. In this particular case, the glow plug circuit for cylinder 2 is not functioning properly. This can lead to difficulties starting the engine, rough idling, decreased fuel efficiency, and potentially even engine misfires.
Common Causes of P0672 2018 Chevrolet Silverado
- Faulty glow plug in cylinder 2.
- Damaged wiring harness connected to the glow plug.
- Malfunctioning glow plug control module.
- Poor electrical connection between components.
- Corrosion or damage to the glow plug circuit components.
Symptoms of P0672 2018 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or engine misfires.
- Decreased fuel efficiency.
- Check Engine Light illuminated on the dashboard.
- Engine performance issues.
How to Fix P0672 2018 Chevrolet Silverado
- Begin by diagnosing the specific cause of the issue using a diagnostic scanner to pinpoint the fault in the glow plug circuit.
- Inspect the glow plug in cylinder 2 for any signs of damage or malfunction. Replace the glow plug if necessary.
- Check the wiring harness connected to the glow plug for any breaks, frays, or corrosion. Repair or replace the wiring harness as needed.
- Test the glow plug control module to ensure it is functioning correctly. Replace the control module if it is found to be faulty.
- Clear the trouble code from the vehicle's computer system and test the engine to ensure that the issue has been resolved.
Cost to Fix P0672 2018 Chevrolet Silverado
The typical repair costs for addressing a cylinder 2 glow plug circuit fault in a 2018 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, 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 is advisable to check with local repair shops for a more accurate estimate. Labor rates per hour typically range between $80 and $150, depending on the shop's location and expertise.
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Frequently Asked Questions about P0672 2018 Chevrolet Silverado Code
1. What does the OBDII code P0672 mean on a 2018 Chevrolet Silverado?
P0672 indicates a fault in the cylinder 2 glow plug circuit, meaning the engine control module (ECM) has detected an issue with the glow plug or its wiring for cylinder 2.
2. What are the common symptoms of code P0672 in a 2018 Chevrolet Silverado?
Common symptoms include difficulty starting in cold weather, rough idling, reduced fuel efficiency, and an illuminated check engine light.
3. What causes the P0672 code on a 2018 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 electrical connections.
4. Can I drive my 2018 Chevrolet Silverado with the P0672 code?
While the vehicle may still be drivable, it could experience starting problems in cold weather and reduced performance. It's best to address the issue as soon as possible to avoid further damage.
5. How do I diagnose the P0672 code on a 2018 Chevrolet Silverado?
Start by checking the glow plug for cylinder 2 using a multimeter, 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 2018 Chevrolet Silverado?
Common fixes include replacing the faulty glow plug for cylinder 2, repairing or replacing damaged wiring or connectors, or replacing the glow plug control module if necessary.
7. How much does it cost to repair the P0672 code on a 2018 Chevrolet Silverado?
Replacing a single glow plug typically costs $100-$200, including parts and labor. If additional wiring repairs or control module replacements are needed, the cost could increase.
8. Can a bad glow plug cause engine damage on a 2018 Chevrolet Silverado?
While a bad glow plug itself won’t typically cause engine damage, prolonged issues with the glow plug circuit can lead to harder starts, increased emissions, and potential damage to other components.
9. How can I prevent the P0672 code from occurring again?
Regular maintenance, such as inspecting glow plugs and electrical connections during service intervals, and promptly addressing any starting issues, can help prevent this code.
10. Does the P0672 code only appear in cold weather?
While the symptoms of a faulty glow plug are more noticeable in cold weather, the code can appear at any time if the ECM detects an electrical fault in the cylinder 2 glow plug circuit.
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