AutoCodes – Chevrolet – P1339 2018 Chevrolet Silverado

P1339 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 419

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Cylinder 2 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P1339 2018 Chevrolet Silverado Code - Cylinder 2 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P1339 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P1339 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1339 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 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 vehicleâ€™s warranty coverage. Glow plugs may be covered under the powertrain warranty, but itâ€™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.