AutoCodes – Cadillac – P1339 Cadillac

P1339 Cadillac 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 Cadillac 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 585

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

What does this mean?

What are the Possible Causes of the DTC P1339 Cadillac?

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 Cadillac?

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 Cadillac 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.

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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 Cadillac Code

1. What are the common symptoms of OBDII code P1339 in a Cadillac related to Cylinder 2 Glow Plug Offset Exceeded Learning Limit?

- Common symptoms include rough idling, reduced engine performance, hesitation, and possible misfires.

2. What causes the OBDII code P1339 in a Cadillac?

- The code P1339 is typically triggered when the Engine Control Module (ECM) detects that the glow plug offset for cylinder 2 has exceeded the learning limit.

3. How serious is OBDII code P1339 in a Cadillac?

- While the code itself may not lead to immediate engine failure, it can affect engine performance and fuel efficiency if left unresolved.

4. Can driving with OBDII code P1339 in a Cadillac cause further damage?

- Continued driving with this code may lead to increased fuel consumption, potential damage to the catalytic converter, and further deterioration of engine performance.

5. How can I diagnose OBDII code P1339 in a Cadillac?

- Diagnosis typically involves using a diagnostic scan tool to retrieve the specific trouble code and examining the glow plug system for any faults or issues.

6. What are some possible repair tips for addressing OBDII code P1339 in a Cadillac?

- Repair tips may include checking and testing the glow plug for cylinder 2, inspecting the glow plug wiring, and resetting the ECM to clear the code.

7. Can I reset the OBDII code P1339 in a Cadillac on my own?

- While you can reset the code using a diagnostic scan tool, it is recommended to address the underlying issue causing the code to prevent it from reoccurring.

8. Is it safe to continue driving my Cadillac with the OBDII code P1339 present?

- It is not recommended to ignore the code and continue driving, as unresolved issues can lead to decreased performance and potential long-term damage.

9. How much does it typically cost to repair OBDII code P1339 in a Cadillac?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve replacing the glow plug, repairing wiring, or addressing other related components.

10. Can a mechanic help me with diagnosing and repairing OBDII code P1339 in my Cadillac?

- Yes, a qualified mechanic with experience in Cadillac vehicles can diagnose the issue accurately and perform the necessary repairs to resolve the code P1339.