AutoCodes – Buick – P133C Buick

P133C Buick 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 Buick 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 377

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

What does this mean?

What are the Possible Causes of the DTC P133C Buick?

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 Buick?

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 Buick 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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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 Buick Code

1. What does the OBDII code P133C mean for a Buick?

P133C indicates that the offset for the glow plug in cylinder 5 has exceeded the learning limit, suggesting an issue with the glow plug or the engine control module's calibration.

2. What are the common symptoms of P133C on a Buick?

Symptoms may include difficulty starting the engine in cold weather, reduced engine performance, a check engine light, or rough idling.

3. What causes the P133C code to appear on a Buick?

Common causes include a faulty glow plug in cylinder 5, poor electrical connections, carbon buildup on the glow plug, or an issue with the engine control module (ECM).

4. Can I drive my Buick with the P133C code?

While the vehicle may still be drivable, ignoring the issue could lead to further engine starting problems, especially in cold conditions. Prompt diagnosis and repair are recommended.

5. How do I fix the P133C code on a Buick?

Repairs might include replacing the glow plug in cylinder 5, checking and cleaning the electrical connections, or reprogramming or replacing the ECM if necessary.

6. How is the P133C code diagnosed on a Buick?

A mechanic will use a scan tool to confirm the code, test the glow plug in cylinder 5, inspect the wiring and connections, and possibly check the ECM for updates or faults.

7. How much does it cost to fix the P133C code on a Buick?

The cost can vary depending on the repair needed. Replacing a glow plug typically costs $50 to $150, while ECM repairs or replacements can cost $300 or more.

8. Can a faulty glow plug cause long-term damage if the P133C code is ignored?

Yes, prolonged issues with a glow plug can lead to starting problems, increased emissions, and potential engine damage over time.

9. What tools are needed to repair a P133C code on a Buick?

Basic tools include a scan tool for diagnostics, a multimeter to test electrical connections, and the appropriate tools to replace the glow plug.

10. What preventive maintenance can help avoid the P133C code on a Buick?

Regularly inspecting and cleaning glow plugs, ensuring proper electrical connections, and keeping the ECM updated can help prevent this code from occurring.