P1338 Chevrolet Code - Cylinder 1 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 1, Glow Plug 1 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
- P1338 Chevrolet indicates Cylinder 1 Glow Plug Offset Exceeded Learning Limit.
- Common causes
- Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 1, Glow Plug 1 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.
Code P1338 Chevrolet Description
What are the Possible Causes of the DTC P1338 Chevrolet?
- Perform Glow Plug Learn procedure
- Faulty Glow Plug 1
- Glow Plug 1 harness is open or shorted
- Glow Plug 1 circuit poor electrical connection
How to Fix the DTC P1338 Chevrolet?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1338 Chevrolet 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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Get the P1338 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Information for Specific Chevrolet Models
- P1338 2014 Chevrolet Silverado — Cylinder 1 Glow Plug Offset Exceeded Learning Limit
- P1338 2015 Chevrolet Silverado — Cylinder 1 Glow Plug Offset Exceeded Learning Limit
- P1338 2016 Chevrolet Silverado — Cylinder 1 Glow Plug Offset Exceeded Learning Limit
- P1338 2017 Chevrolet Silverado — Cylinder 1 Glow Plug Offset Exceeded Learning Limit
- P1338 2018 Chevrolet Silverado — Cylinder 1 Glow Plug Offset Exceeded Learning Limit
Frequently Asked Questions about P1338 Chevrolet Code
1. What are the common symptoms of OBDII code P1338 on a Chevrolet related to Cylinder 1 Glow Plug Offset?
- Common symptoms include rough idling, reduced engine performance, and possible illumination of the Check Engine Light.
2. What causes the OBDII code P1338 on a Chevrolet indicating Cylinder 1 Glow Plug Offset Exceeded Learning Limit?
- The code can be triggered by issues such as a faulty glow plug, wiring issues, or problems with the glow plug control module.
3. How does the Cylinder 1 Glow Plug Offset Exceeded Learning Limit affect the vehicle's performance?
- This issue can lead to difficulties starting the engine, reduced fuel efficiency, and potential misfires in Cylinder 1.
4. Can a DIY enthusiast repair the P1338 OBDII code related to the glow plug offset on a Chevrolet?
- While some basic troubleshooting like checking the glow plug and wiring connections can be done by DIYers, advanced diagnostics and repairs may require professional assistance.
5. What are some tips for repairing OBDII code P1338 on a Chevrolet Cylinder 1 Glow Plug Offset issue?
- Inspect the glow plug and wiring for damage, check the glow plug control module for faults, and ensure proper connection and functioning of all related components.
6. Are there any safety concerns associated with driving a Chevrolet with the P1338 code related to Cylinder 1 Glow Plug Offset?
- Driving with this issue may lead to reduced engine performance and potential engine damage if not addressed promptly. It's advisable to have the vehicle inspected and repaired as soon as possible.
7. How can a mechanic diagnose the OBDII code P1338 on a Chevrolet indicating Cylinder 1 Glow Plug Offset Exceeded Learning Limit?
- A mechanic can use a scan tool to retrieve the code, perform a visual inspection of the glow plug system, conduct electrical tests, and check for any other related issues.
8. Is it possible for the OBDII code P1338 to reappear after repairs have been made on a Chevrolet?
- If the underlying issue causing the code is not properly addressed, the code may reappear. It's crucial to diagnose the root cause accurately to prevent recurrence.
9. Can driving with the P1338 code on a Chevrolet cause further damage to the engine or other components?
- Ignoring the issue and continuing to drive with the code may lead to poor engine performance, increased emissions, and potential damage to the catalytic converter over time.
10. How long does it typically take to repair the OBDII code P1338 related to Cylinder 1 Glow Plug Offset on a Chevrolet?
- The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a day for diagnostics, parts replacement, and testing to resolve the problem efficiently.
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