AutoCodes – Generic – P133C

P133C Code - Cylinder 5 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 5, Glow Plug 5 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: P133C indicates Cylinder 5 Glow Plug Offset Exceeded Learning Limit.
Common causes: Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 5, Glow Plug 5 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 8,864

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 P133C 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 P133C - Cylinder 5 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133C Code - Cylinder 5 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133C?

Perform Glow Plug Learn procedure
Faulty Glow Plug 5
Glow Plug 5 harness is open or shorted
Glow Plug 5 circuit poor electrical connection

How to Fix the DTC P133C?

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 P133C 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 P133C code?

Need more information on how to fix the P133C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P133C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P133C Buick — Cylinder 5 Glow Plug Offset Exceeded Learning Limit
P133C Cadillac — Cylinder 5 Glow Plug Offset Exceeded Learning Limit
P133C Chevrolet — Cylinder 5 Glow Plug Offset Exceeded Learning Limit
P133C GMC — Cylinder 5 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 P133C Code

1. What are the common symptoms of OBDII code P133C (Cylinder 5 Glow Plug Offset Exceeded Learning Limit)?

The common symptoms include rough idling, loss of power, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What could cause OBDII code P133C to trigger?

The code P133C is typically triggered by a faulty glow plug in cylinder 5, issues with the glow plug control module, or wiring problems related to the glow plug system.

3. How can I diagnose the underlying issue causing OBDII code P133C?

Diagnosing the issue involves inspecting the glow plug in cylinder 5, testing the glow plug control module, and checking the wiring for any damages or loose connections.

4. Can driving with OBDII code P133C cause further damage to the vehicle?

Continuing to drive with code P133C may lead to additional issues such as hard starting, misfires, and potential damage to the engine components in the long run.

5. What are the repair options for addressing OBDII code P133C?

Repair options include replacing the faulty glow plug in cylinder 5, repairing or replacing the glow plug control module, and ensuring the wiring connections are secure and free of damage.

6. Is it safe to continue driving my vehicle with code P133C if I don't notice any symptoms?

It is not recommended to continue driving with code P133C even if you don't notice any symptoms, as the underlying issue can worsen over time and potentially lead to more severe problems.

7. How much does it typically cost to fix OBDII code P133C at a repair shop?

The cost of fixing code P133C can vary depending on the specific underlying issue, but it may range from $200 to $500 for parts and labor at a repair shop.

8. Can I reset the Check Engine Light after repairing OBDII code P133C myself?

Yes, you can reset the Check Engine Light using an OBDII scanner after repairing the issue causing code P133C. This will clear the code and turn off the warning light.

9. Are there any preventive measures to avoid OBDII code P133C in the future?

Regular maintenance of the glow plug system, including checking and replacing glow plugs as needed, can help prevent the recurrence of code P133C in the future.

10. How long does it typically take to repair OBDII code P133C?

The repair time for code P133C can vary based on the specific issue and the expertise of the technician, but it usually takes around 1-2 hours to diagnose and fix the problem.