AutoCodes – Generic – P1339

P1339 Code - Cylinder 2 Glow Plug Offset Exceeded Learning Limit

Quick Answer

The Glow Plug Control Module has not learned the glow plug offset values. Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 2, Glow Plug 2 harness is open or shorted. 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 indicates Cylinder 2 Glow Plug Offset Exceeded Learning Limit.
Common causes: Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 2, Glow Plug 2 harness is open or shorted.
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 Popularity 37,908

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 30, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1339 Description

The Glow Plug Control Module has not learned the glow plug offset values. If a glow plug has been replaced and the glow plug learn was not performed, or if the Glow Plug Control Module experiences an Electronically Erasable Programmable Read Only Memory (EEPROM) error or data corruption, this Diagnostic Trouble Code (DTC) to set. The DTC will be set if the glow plug hot resistance is outside a predefined threshold.

OBDII Code P1339 - Cylinder 2 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P1339 Code - Cylinder 2 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P1339?

Perform Glow Plug Learn procedure
Faulty Glow Plug 2
Glow Plug 2 harness is open or shorted
Glow Plug 2 circuit poor electrical connection

How to Fix the DTC P1339?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

If a Glow Plug was replaced, perform a Glow Plug Learn procedure with a Scan Tool.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1339 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1339 code?

Need more information on how to fix the P1339 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1339 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1339 Audi — Crankshaft Position/Engine Speed Sensor Cross Connected
P1339 Buick — Cylinder 2 Glow Plug Offset Exceeded Learning Limit
P1339 Cadillac — Cylinder 2 Glow Plug Offset Exceeded Learning Limit
P1339 Chevrolet — Cylinder 2 Glow Plug Offset Exceeded Learning Limit
P1339 GMC — Cylinder 2 Glow Plug Offset Exceeded Learning Limit
P1339 Volkswagen — Crankshaft Position/Engine Speed Sensor Cross Connected

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1339 Code

1. What are the common symptoms of OBDII code P1339 (Cylinder 2 Glow Plug Offset Exceeded Learning Limit)?

The common symptoms of P1339 may include rough idling, loss of power, increased fuel consumption, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1339?

Possible causes of P1339 include faulty glow plug, wiring issues, a malfunctioning glow plug control module, or a problem with the engine control module (ECM).

3. How can I diagnose the issue related to OBDII code P1339?

Diagnosing P1339 typically involves inspecting the glow plug, checking the wiring for any damage, testing the glow plug control module, and scanning the ECM for fault codes.

4. Can I still drive my vehicle with OBDII code P1339?

It is not recommended to drive the vehicle with code P1339 as it can lead to further damage to the engine components. It's best to address the issue promptly.

5. How can I repair OBDII code P1339 (Cylinder 2 Glow Plug Offset Exceeded Learning Limit)?

Repairing P1339 may involve replacing the faulty glow plug, repairing or replacing damaged wiring, or replacing the glow plug control module as needed.

6. Is it possible to reset OBDII code P1339 without fixing the underlying issue?

Resetting the code without addressing the root cause may temporarily turn off the check engine light, but the issue will likely reoccur. It's important to fix the problem to prevent further complications.

7. Can weather conditions affect OBDII code P1339?

Extreme cold weather can sometimes lead to glow plug issues, which may trigger P1339. Ensuring the glow plugs are in good condition and properly functioning can help prevent weather-related problems.

8. How long does it typically take to repair OBDII code P1339?

The repair time for P1339 can vary depending on the exact cause of the issue and the availability of parts. It's best to consult a professional mechanic for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code P1339 in the future?

Regular maintenance, such as checking and replacing glow plugs as recommended by the manufacturer, can help prevent issues like P1339 from occurring. Following the recommended service schedule is key.

10. Can OBDII code P1339 cause damage to other engine components if left unresolved?

If left unresolved, P1339 can potentially cause damage to other engine components, such as the catalytic converter or the engine itself, due to improper combustion and inefficient fuel burning.