AutoCodes – Generic – P133F

P133F 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 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.

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Code Popularity 3,733

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 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 P133F 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 P133F - Cylinder 8 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133F Code - Cylinder 8 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133F?

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?

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 P133F 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 P133F code?

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Need Help with the Code?

Get the P133F code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P133F Buick — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
P133F Cadillac — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
P133F Chevrolet — Cylinder 8 Glow Plug Offset Exceeded Learning Limit
P133F GMC — Cylinder 8 Glow Plug Offset Exceeded Learning Limit

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 P133F Code

1. What are the common symptoms of OBDII code P133F (Cylinder 8 Glow Plug Offset Exceeded Learning Limit)?

- Common symptoms include rough idling, loss of power, poor fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P133F?

- The code P133F can be triggered by issues such as a faulty glow plug, wiring problems, a malfunctioning glow plug control module, or a communication error within the vehicle's system.

3. How can I diagnose the OBDII code P133F?

- Diagnosing the code typically involves using an OBDII scanner to retrieve the code, checking the glow plug and related components for any visible damage, and performing electrical tests to pinpoint the exact issue.

4. What is the recommended repair for OBDII code P133F?

- The recommended repair for this code usually involves replacing the faulty glow plug or repairing any damaged wiring or connections. In some cases, recalibrating the glow plug control module may also be necessary.

5. Can I continue driving my vehicle with OBDII code P133F?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further engine damage and affect overall performance.

6. How much does it typically cost to repair OBDII code P133F?

- The cost of repairing this code can vary depending on the extent of the issue and the specific repairs needed. On average, expect to pay between $100 to $300 for parts and labor.

7. Are there any preventive measures to avoid OBDII code P133F in the future?

- To prevent the recurrence of this code, it is recommended to perform regular maintenance on the glow plug system, including checking for signs of wear or damage and addressing any issues promptly.

8. Can a DIY enthusiast repair OBDII code P133F?

- While some experienced DIY enthusiasts may be able to diagnose and replace a faulty glow plug, it is recommended to consult a professional mechanic for an accurate diagnosis and proper repair of this code.

9. Will resetting the check engine light clear OBDII code P133F?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after some driving cycles.

10. How long does it take to repair OBDII code P133F?

- The repair time for this code can vary depending on the extent of the issue and the availability of parts. In general, it may take a few hours to a full day for a mechanic to diagnose and repair the problem.