AutoCodes – Chevrolet – P133F 2014 Chevrolet Silverado

P133F 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado 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 238

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 2014 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 P133F 2014 Chevrolet Silverado - Cylinder 8 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133F 2014 Chevrolet Silverado Code - Cylinder 8 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133F 2014 Chevrolet Silverado?

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 2014 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 P133F 2014 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 P133F 2014 Chevrolet Silverado code?

Need more information on how to fix the P133F 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P133F 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado Code

What does the OBDII code P133F mean on a 2014 Chevrolet Silverado?

P133F indicates that the glow plug offset for cylinder 8 has exceeded the allowable learning limit, which can affect the engine's ability to start or run efficiently in cold conditions.

What are the symptoms of a P133F code on a 2014 Chevrolet Silverado?

Symptoms may include difficulty starting in cold weather, rough idling, reduced fuel efficiency, and an illuminated check engine light.

What causes the P133F code to appear on a 2014 Chevrolet Silverado?

Common causes include a faulty glow plug in cylinder 8, a defective glow plug control module, wiring or connector issues, or excessive carbon buildup in the cylinder.

Can I drive my 2014 Chevrolet Silverado with a P133F code?

While the truck may still run, driving with a P133F code can lead to poor performance, especially in cold weather, and may eventually result in more severe engine problems if left unresolved.

How do I diagnose a P133F code on a 2014 Chevrolet Silverado?

Start by inspecting the glow plug for cylinder 8, checking for damage or wear. Test the glow plugâ€™s resistance, inspect the wiring and connectors, and verify the functionality of the glow plug control module.

How do I fix the P133F code on a 2014 Chevrolet Silverado?

The most common fix is replacing the defective cylinder 8 glow plug. If the glow plug is functional, inspect and repair any damaged wiring or replace the glow plug control module if necessary.

Can a P133F code be caused by carbon buildup?

Yes, excessive carbon buildup in cylinder 8 can cause the glow plug to function improperly, leading to the P133F code. Cleaning the cylinder may help resolve the issue.

What tools are needed to troubleshoot the P133F code?

Youâ€™ll need a diagnostic scanner, a multimeter to test the glow plug resistance, and basic tools to inspect and replace the glow plug or related components.

How much does it cost to repair a P133F code on a 2014 Chevrolet Silverado?

Repair costs can vary. Replacing a glow plug typically costs $50-$150 for parts, plus labor. Glow plug control module replacement or wiring repairs may increase costs.

Can a faulty glow plug control module trigger the P133F code?

Yes, if the glow plug control module is malfunctioning, it may cause incorrect readings or fail to properly heat the glow plug, leading to the P133F code.