P133F GMC Code - Cylinder 8 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 8, Glow Plug 8 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
- P133F GMC indicates Cylinder 8 Glow Plug Offset Exceeded Learning Limit.
- Common causes
- Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 8, Glow Plug 8 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 P133F GMC Description
What are the Possible Causes of the DTC P133F GMC?
- Perform Glow Plug Learn procedure
- Faulty Glow Plug 8
- Glow Plug 8 harness is open or shorted
- Glow Plug 8 circuit poor electrical connection
How to Fix the DTC P133F GMC?
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 P133F GMC 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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Information for Specific GMC Models
- P133F 2014 GMC Sierra — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
- P133F 2015 GMC Sierra — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
- P133F 2016 GMC Sierra — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
- P133F 2017 GMC Sierra — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
- P133F 2018 GMC Sierra — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
Frequently Asked Questions about P133F GMC Code
1. What are the common symptoms of OBDII code P133F GMC?
- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and the illumination of the Check Engine light.
2. What does the OBDII code P133F GMC indicating "Cylinder 8 Glow Plug Offset Exceeded Learning Limit" mean?
- This code indicates that the engine control module has detected an issue with the glow plug operation in cylinder 8, which has exceeded the set learning limits.
3. What are the possible causes of OBDII code P133F GMC?
- Possible causes include faulty glow plug in cylinder 8, wiring issues, a defective glow plug control module, or a problem with the engine control module itself.
4. How can I diagnose the cause of OBDII code P133F GMC?
- Diagnostic steps may involve checking the glow plug in cylinder 8, inspecting the wiring for damage or loose connections, testing the glow plug control module, and scanning the engine control module for related error codes.
5. Is it safe to continue driving with OBDII code P133F GMC present?
- It is not recommended to drive with this code present, as it can lead to engine performance issues and potential damage if left unresolved.
6. Can I reset OBDII code P133F GMC without fixing the underlying issue?
- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent further problems.
7. How do I repair OBDII code P133F GMC?
- Repair may involve replacing the faulty glow plug in cylinder 8, repairing or replacing damaged wiring, replacing the glow plug control module, or reprogramming the engine control module.
8. Are there any preventative maintenance tips to avoid OBDII code P133F GMC?
- Regularly inspecting and maintaining the glow plugs, wiring, and control modules can help prevent issues that may trigger this code.
9. Can extreme weather conditions affect OBDII code P133F GMC?
- Yes, extreme cold temperatures can put more strain on glow plugs and their operation, potentially leading to issues that trigger this code.
10. How much can I expect to pay for repairs related to OBDII code P133F GMC?
- Repair costs can vary based on the specific cause of the issue, but you can expect to pay anywhere from $100 to $500 or more for parts and labor.
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