P1339 2014 GMC Sierra Code - Cylinder 2 Glow Plug Offset Exceeded Learning Limit
Quick Answer
The diagnostic trouble code P1339 for a 2014 GMC Sierra indicates that there is an issue with the glow plug in cylinder 2. Common causes include Faulty glow plug in cylinder 2, Wiring issues related to 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 2014 GMC Sierra indicates Cylinder 2 Glow Plug Offset Exceeded Learning Limit.
- Common causes
- Common causes include Faulty glow plug in cylinder 2, Wiring issues related to 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 2014 GMC Sierra Description
The diagnostic trouble code P1339 for a 2014 GMC Sierra indicates that there is an issue with the glow plug in cylinder 2. Glow plugs are essential components in diesel engines, as they help to heat the air in the combustion chamber to facilitate cold starting. The glow plug offset being exceeded means that the control module has detected that the glow plug in cylinder 2 is not performing within the expected parameters. This can lead to difficulties in starting the engine, reduced fuel efficiency, and overall poor engine performance.
Common Causes of P1339 2014 GMC Sierra
- Faulty glow plug in cylinder 2
- Wiring issues related to the glow plug circuit
- Malfunctioning glow plug control module
- Engine computer system malfunction
- Poor quality fuel or contaminated fuel affecting glow plug performance
Symptoms of P1339 2014 GMC Sierra
- Difficulties starting the engine, especially in cold weather
- Engine misfires or rough idling
- Reduced fuel efficiency
- Engine stalling
- Illumination of the check engine light
How to Fix P1339 2014 GMC Sierra
- Diagnose the issue by performing a comprehensive inspection of the glow plug in cylinder 2, the wiring, and the control module.
- Replace the faulty glow plug if necessary.
- Repair any damaged wiring or connections in the glow plug circuit.
- Reset the engine computer system to clear the fault code and relearn the glow plug offset.
- Test the vehicle to ensure that the issue has been resolved and that the engine is running smoothly.
Cost to Fix P1339 2014 GMC Sierra
The cost of repairing a cylinder 2 glow plug offset exceeded learning limit code on a 2014 GMC Sierra can vary depending on the extent of the issue and the specific parts that need to be replaced. On average, the cost of parts for a glow plug replacement can range from $50 to $150 per glow plug, with labor costs typically adding an additional $100 to $200. Overall, the total repair cost can range from $200 to $600. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is recommended to get quotes from multiple shops to ensure the best price.
Tech Notes for P1339 2014 GMC Sierra
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Frequently Asked Questions about P1339 2014 GMC Sierra Code
What does OBDII code P1339 mean on a 2014 GMC Sierra?
P1339 indicates that the Cylinder 2 Glow Plug Offset has exceeded the learning limit, meaning the glow plug system in that cylinder is not performing within acceptable parameters.
What are the common symptoms of code P1339 on a 2014 GMC Sierra?
Symptoms may include difficulty starting in cold weather, rough idling, increased emissions, and the Check Engine Light being illuminated.
What causes code P1339 to appear on a 2014 GMC Sierra?
Common causes include a faulty glow plug, damaged glow plug control module, wiring issues, or carbon buildup around the glow plug.
Can you drive with code P1339 on a 2014 GMC Sierra?
While the truck may still be drivable, ignoring the issue can lead to harder cold starts, reduced engine performance, and potential damage to other components.
How do you diagnose code P1339 on a 2014 GMC Sierra?
Diagnosis involves scanning the vehicle for stored codes, testing the glow plug in cylinder 2, checking the glow plug control module, and inspecting wiring and connections.
What is the most common fix for code P1339 on a 2014 GMC Sierra?
Replacing the faulty glow plug in cylinder 2 is the most common repair, though other components like the control module or wiring may also need attention.
How much does it cost to fix code P1339 on a 2014 GMC Sierra?
The cost to replace a glow plug typically ranges from $100 to $300, depending on labor rates and parts pricing.
Can a bad glow plug cause other issues in a 2014 GMC Sierra?
Yes, a bad glow plug can lead to poor fuel combustion, increased emissions, and in extreme cases, damage to the engine over time.
How do I prevent code P1339 from reoccurring on my 2014 GMC Sierra?
Regular maintenance, including inspecting and replacing glow plugs as needed, and addressing any wiring issues promptly can help prevent this code.
Is code P1339 specific to cylinder 2 on a 2014 GMC Sierra?
Yes, P1339 specifically refers to the glow plug in cylinder 2 exceeding its performance limits, although similar codes exist for other cylinders.
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