P1339 2018 Chevrolet Silverado Code - Cylinder 2 Glow Plug Offset Exceeded Learning Limit
Quick Answer
The P1339 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that the Engine Control Module (ECM) has detected that the glow plug offset for cylinder 2 has exceeded the learning limit. Common causes include Faulty glow plug in cylinder 2, Wiring 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
- P1339 2018 Chevrolet Silverado indicates Cylinder 2 Glow Plug Offset Exceeded Learning Limit.
- Common causes
- Common causes include Faulty glow plug in cylinder 2, Wiring 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.
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Code P1339 2018 Chevrolet Silverado Description
The P1339 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates that the Engine Control Module (ECM) has detected that the glow plug offset for cylinder 2 has exceeded the learning limit. Glow plugs are essential components in a diesel engine's cold-start system, heating the combustion chamber to facilitate easier starting in cold conditions. When the glow plug offset exceeds the learning limit, it means that the ECM is unable to control the glow plug operation within the expected parameters for optimal performance.
Common Causes of P1339 2018 Chevrolet Silverado
- Faulty glow plug in cylinder 2.
- Wiring issues in the glow plug circuit.
- Malfunctioning glow plug control module.
- ECM software or hardware issues.
- Poor quality diesel fuel or contaminated fuel affecting glow plug performance.
Symptoms of P1339 2018 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or misfires.
- Decreased power output.
- Increased emissions.
- Illumination of the check engine light.
How to Fix P1339 2018 Chevrolet Silverado
- Diagnose the exact cause of the issue using a diagnostic scanner to retrieve the DTC and pinpoint the underlying problem.
- Inspect the glow plug in cylinder 2 for proper operation and replace if necessary.
- Check the wiring in the glow plug circuit for any damage or corrosion and repair as needed.
- Test the glow plug control module for proper function and replace if faulty.
- Clear the DTC from the ECM memory and perform a test drive to verify that the issue has been resolved.
Cost to Fix P1339 2018 Chevrolet Silverado
The cost estimate for repairing the P1339 code on a 2018 Chevrolet Silverado can vary depending on the exact cause of the issue. Generally, replacing a glow plug can cost between $50 and $150 per plug, including parts and labor. If the wiring or glow plug control module needs replacement, the total cost could range from $200 to $500 or more. Additional diagnostic fees and labor costs may apply, with total repair costs potentially exceeding $500. It's advisable to consult with a qualified mechanic or auto repair shop to obtain an accurate estimate based on the specific circumstances of the vehicle.
Tech Notes for P1339 2018 Chevrolet Silverado
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Frequently Asked Questions about P1339 2018 Chevrolet Silverado Code
What does the OBDII code P1339 mean on a 2018 Chevrolet Silverado?
P1339 indicates that the glow plug offset for cylinder 2 has exceeded the learning limit, meaning the system has detected an issue with the glow plug's performance or calibration.
What are the symptoms of the P1339 code on a Chevrolet Silverado?
Common symptoms include difficulty starting the engine in cold conditions, reduced engine performance, and possibly an illuminated check engine light.
What causes the P1339 code to appear?
The code can be caused by a faulty glow plug in cylinder 2, a damaged glow plug control module, poor electrical connections, or excessive carbon buildup on the glow plug.
How do you diagnose the P1339 code?
Diagnosis involves scanning for codes with an OBDII scanner, inspecting the glow plug and its wiring in cylinder 2, and testing the glow plug's resistance to determine if it is faulty.
Can you drive with the P1339 code on a 2018 Chevrolet Silverado?
While the vehicle may still run, driving with this code can lead to poor cold starts and potentially more severe engine issues if left unaddressed.
How do you fix the P1339 code on a 2018 Chevrolet Silverado?
Common repairs include replacing the cylinder 2 glow plug, cleaning carbon deposits, repairing or replacing damaged wiring, or replacing the glow plug control module if necessary.
What tools are needed to repair the P1339 code?
Basic tools include an OBDII scanner, a multimeter for electrical testing, and appropriate hand tools to remove and replace the glow plug or wiring components.
Is the P1339 code covered under warranty for a 2018 Chevrolet Silverado?
It depends on the vehicle’s warranty coverage. Glow plugs may be covered under the powertrain warranty, but it’s best to check with your Chevrolet dealership.
Can a software update fix the P1339 code?
In some cases, a reprogramming or software update to the engine control module (ECM) may resolve calibration issues related to the code.
What maintenance can help prevent the P1339 code?
Regular inspection of the glow plug system, keeping the engine clean, and addressing any starting issues early can help prevent this code from triggering.
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