AutoCodes – Chevrolet – P133A 2015 Chevrolet Silverado

P133A 2015 Chevrolet Silverado Code - Cylinder 3 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 3, Glow Plug 3 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: P133A 2015 Chevrolet Silverado indicates Cylinder 3 Glow Plug Offset Exceeded Learning Limit.
Common causes: Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 3, Glow Plug 3 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 237

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 P133A 2015 Chevrolet Silverado 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 P133A 2015 Chevrolet Silverado - Cylinder 3 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133A 2015 Chevrolet Silverado Code - Cylinder 3 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133A 2015 Chevrolet Silverado?

Perform Glow Plug Learn procedure
Faulty Glow Plug 3
Glow Plug 3 harness is open or shorted
Glow Plug 3 circuit poor electrical connection

How to Fix the DTC P133A 2015 Chevrolet Silverado?

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 P133A 2015 Chevrolet Silverado 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 P133A 2015 Chevrolet Silverado code?

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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 P133A 2015 Chevrolet Silverado Code

1. What does the OBDII code P133A mean on a 2015 Chevrolet Silverado?

P133A indicates that the glow plug offset for cylinder 3 has exceeded the learning limit, suggesting an issue with the glow plug system or related components.

2. What are the common symptoms of a P133A code?

Symptoms may include difficulty starting the engine, rough idling, reduced engine performance, and the check engine light being illuminated.

3. What causes the P133A code to trigger?

Common causes include a faulty glow plug, poor electrical connections, damaged wiring, or an issue with the glow plug control module.

4. Can I drive my 2015 Chevrolet Silverado with a P133A code?

While the vehicle may still be drivable, prolonged operation with this code can lead to starting issues and potential damage to the engine. Itâ€™s best to address the issue promptly.

5. How do I diagnose a P133A code?

Diagnosis involves checking the glow plug for cylinder 3, inspecting the wiring and connectors, and testing the glow plug control module for proper operation.

6. How do I fix the P133A code on a Silverado?

Repairs may include replacing the faulty glow plug, repairing damaged wiring, cleaning or reconnecting electrical connectors, or replacing the glow plug control module if necessary.

7. How much does it cost to repair a P133A code?

Repair costs can vary but typically range from $100 to $400, depending on whether the glow plug, wiring, or control module needs replacement.

8. Can a P133A code be caused by a software issue?

While rare, a software issue in the engine control module (ECM) could potentially cause this code. A reflash or update to the ECM may be needed in such cases.

9. How can I prevent a P133A code from reoccurring?

Regular maintenance, including periodic inspection of the glow plug system and ensuring good electrical connections, can help prevent this code from returning.

10. Does the P133A code affect emissions?

Yes, a malfunctioning glow plug system can affect combustion efficiency, potentially leading to increased emissions and reduced fuel economy.