AutoCodes – Chevrolet – P133C 2015 Chevrolet Silverado

P133C 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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 1,250

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 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 P133C 2015 Chevrolet Silverado - Cylinder 5 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133C 2015 Chevrolet Silverado Code - Cylinder 5 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133C 2015 Chevrolet Silverado?

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 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 P133C 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 P133C 2015 Chevrolet Silverado code?

Need more information on how to fix the P133C 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the 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 P133C 2015 Chevrolet Silverado Code

1. What does the OBDII code P133C mean on a 2015 Chevrolet Silverado?

P133C indicates that the offset for the Cylinder 5 glow plug has exceeded the learning limit, meaning the glow plug's performance is not within the acceptable range.

2. What are common symptoms of the P133C code?

Symptoms may include difficulty starting the engine in cold weather, poor engine performance, and the check engine light being illuminated.

3. What causes the P133C code on a 2015 Chevrolet Silverado?

The most common causes are a faulty glow plug in Cylinder 5, poor electrical connections, or an issue with the glow plug control module.

4. Can I drive my Silverado with the P133C code active?

While the truck may still be drivable, ignoring the code could lead to starting issues in cold weather and possible long-term engine damage if the problem persists.

5. How do I diagnose a P133C code?

Begin by inspecting the Cylinder 5 glow plug and its wiring for damage or corrosion. You may also need to test the glow plugâ€™s resistance and check the glow plug control module for faults.

6. How do I fix the P133C code?

Repairs may involve replacing the faulty Cylinder 5 glow plug, repairing damaged wiring, or replacing the glow plug control module if it is malfunctioning.

7. How much does it cost to repair a P133C code on a Chevrolet Silverado?

Replacing a glow plug typically costs between $100 and $250, depending on labor rates and parts pricing. Repairing wiring or replacing the control module may add to the cost.

8. Can a faulty glow plug cause other problems in my Silverado?

Yes, a faulty glow plug can lead to hard starts, misfires, reduced fuel efficiency, and increased emissions, especially in colder climates.

9. How can I prevent the P133C code from recurring?

Regularly inspect and maintain the glow plug system, including checking connections for corrosion and ensuring the glow plugs are functioning properly.

10. Do I need a mechanic to fix the P133C code?

If youâ€™re comfortable with basic automotive repairs, you may be able to replace the glow plug or repair wiring yourself. However, a mechanic may be necessary for advanced diagnostics or module replacement.