P1339 2016 GMC Sierra Code - Cylinder 2 Glow Plug Offset Exceeded Learning Limit
Quick Answer
The diagnostic trouble code P1339 in a 2016 GMC Sierra 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 2016 GMC Sierra 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 2016 GMC Sierra Description
The diagnostic trouble code P1339 in a 2016 GMC Sierra 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 diesel engines that help to heat the combustion chamber during cold starts, aiding in the ignition process. When the glow plug offset for cylinder 2 exceeds the learning limit, it means that the ECM has detected an issue with the glow plug operation in that specific cylinder.
Common Causes of P1339 2016 GMC Sierra
- Faulty glow plug in cylinder 2.
- Wiring issues in the glow plug circuit.
- Malfunctioning glow plug control module.
- ECM software or hardware issue.
- Poor quality fuel or contaminated fuel affecting glow plug operation.
Symptoms of P1339 2016 GMC Sierra
- Difficulties in starting the engine, particularly during cold starts.
- Rough idling or misfiring of the engine.
- Decreased fuel efficiency.
- Increased emissions.
- Illumination of the Check Engine Light on the dashboard.
How to Fix P1339 2016 GMC Sierra
- Begin by performing a visual inspection of the glow plug in cylinder 2 and the surrounding wiring to check for any visible damage or corrosion.
- Test the glow plug using a multimeter to determine if it is functioning correctly.
- Check the glow plug control module for any faults or malfunctions.
- If the glow plug and control module are in working order, conduct a thorough diagnostic of the ECM to identify any software or hardware issues.
- Once the root cause of the problem is identified, replace the faulty component and clear the trouble code from the ECM.
Cost to Fix P1339 2016 GMC Sierra
The typical repair costs for addressing a P1339 trouble code in a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty glow plug can range from $50 to $200 per plug, with labor costs adding an additional $100 to $200. If the issue is related to the glow plug control module or the ECM, the repair costs can increase significantly. Overall, the total repair cost for resolving a P1339 code may range from $200 to $600 or more, depending on the extent of the repairs needed. It's advisable to consult with a qualified mechanic or repair shop for a more accurate estimate based on the specific circumstances of your vehicle.
Tech Notes for P1339 2016 GMC Sierra
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Frequently Asked Questions about P1339 2016 GMC Sierra Code
1. What are the common symptoms of OBDII code P1339 on a 2016 GMC Sierra?
- Common symptoms include rough idling, decreased engine performance, and in some cases, the Check Engine light may illuminate.
2. What does the OBDII code P1339 "Cylinder 2 Glow Plug Offset Exceeded Learning Limit" mean on a 2016 GMC Sierra?
- This code indicates that the engine control module has detected that the offset for the glow plug in cylinder 2 has exceeded the learning limit.
3. What are the possible causes of OBDII code P1339 on a 2016 GMC Sierra?
- Possible causes include faulty glow plug in cylinder 2, wiring issues, a malfunctioning glow plug control module, or a problem with the engine control module.
4. How serious is OBDII code P1339 on a 2016 GMC Sierra?
- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential engine performance issues and further damage.
5. Can I continue driving my 2016 GMC Sierra with OBDII code P1339?
- It is not recommended to drive the vehicle extensively with this code present, as it can lead to decreased engine performance and potential long-term damage.
6. How can I diagnose OBDII code P1339 on my 2016 GMC Sierra?
- Diagnosing this code typically involves checking the glow plug in cylinder 2, inspecting the wiring connections, and using a diagnostic scanner to reset the code and monitor the system.
7. What are some repair tips for fixing OBDII code P1339 on a 2016 GMC Sierra?
- Repair tips may include replacing the faulty glow plug, repairing any damaged wiring, resetting the engine control module, or seeking professional assistance for further diagnosis.
8. Is it possible to clear OBDII code P1339 on a 2016 GMC Sierra without fixing the issue?
- While it is possible to clear the code temporarily, it is important to address the underlying problem to prevent the code from reoccurring and potentially causing more significant issues.
9. How much does it typically cost to repair OBDII code P1339 on a 2016 GMC Sierra?
- The cost of repairing this code can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
10. Can I fix OBDII code P1339 on my 2016 GMC Sierra myself, or do I need to take it to a mechanic?
- Depending on your mechanical skills and access to tools, you may be able to address this code yourself by following repair guides or seeking assistance from a professional mechanic for more complex issues.
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