AutoCodes – Cadillac – P133F Cadillac

P133F Cadillac 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 Cadillac 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 471

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 Cadillac 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 Cadillac - Cylinder 8 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133F Cadillac Code - Cylinder 8 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133F Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac code?

Need more information on how to fix the P133F Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P133F Cadillac 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 P133F Cadillac Code

1. What are the common symptoms of OBDII code P133F in a Cadillac?

The common symptoms of OBDII code P133F in a Cadillac include rough idling, reduced engine performance, and potential misfires in the affected cylinder.

2. What does the OBDII code P133F "Cylinder 8 Glow Plug Offset Exceeded Learning Limit" mean for a Cadillac?

This code indicates that the glow plug offset for cylinder 8 has exceeded the learning limit set by the vehicle's computer, affecting the proper functioning of the glow plug system.

3. What are the possible causes of OBDII code P133F in a Cadillac?

Possible causes of code P133F in a Cadillac include a faulty glow plug in cylinder 8, wiring issues in the glow plug circuit, or a malfunctioning engine control module (ECM).

4. How can I diagnose OBDII code P133F in my Cadillac?

Diagnosing code P133F may involve checking the glow plug in cylinder 8 for proper functioning, inspecting the wiring in the glow plug circuit for any damage, and using a scan tool to reset the learning limit on the ECM.

5. Can I still drive my Cadillac with OBDII code P133F present?

It is not recommended to drive your Cadillac with code P133F present, as it can lead to further engine damage and reduced performance. It's best to address the issue promptly to avoid potential complications.

6. How can I repair OBDII code P133F in my Cadillac?

Repairing code P133F may involve replacing the faulty glow plug in cylinder 8, repairing any damaged wiring in the glow plug circuit, and resetting the learning limit on the ECM using a diagnostic tool.

7. Is it necessary to clear the OBDII code P133F after repairs are made?

Yes, it is important to clear the OBDII code P133F from the vehicle's computer after repairs are made to ensure that the issue has been resolved and to prevent any further warnings or alerts.

8. Can a DIY enthusiast fix OBDII code P133F in a Cadillac?

Depending on your level of automotive expertise, you may be able to address code P133F yourself by following the repair steps outlined in the vehicle's service manual. However, professional assistance may be advisable for complex issues.

9. How much does it cost to repair OBDII code P133F in a Cadillac?

The cost of repairing code P133F in a Cadillac can vary depending on the extent of the issue, the parts needed for replacement, and whether you choose to address the problem yourself or seek professional help. Costs can range from a few hundred to over a thousand dollars.

10. How can I prevent OBDII code P133F from occurring in my Cadillac in the future?

To prevent code P133F from occurring in the future, it's important to perform regular maintenance on your Cadillac, including checking the glow plug system, ensuring proper wiring connections, and addressing any engine performance issues promptly.