AutoCodes – Chevrolet – P133D 2014 Chevrolet Silverado

P133D 2014 Chevrolet Silverado Code - Cylinder 6 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 6, Glow Plug 6 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: P133D 2014 Chevrolet Silverado indicates Cylinder 6 Glow Plug Offset Exceeded Learning Limit.
Common causes: Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 6, Glow Plug 6 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 331

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 P133D 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 P133D 2014 Chevrolet Silverado - Cylinder 6 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133D 2014 Chevrolet Silverado Code - Cylinder 6 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133D 2014 Chevrolet Silverado?

Perform Glow Plug Learn procedure
Faulty Glow Plug 6
Glow Plug 6 harness is open or shorted
Glow Plug 6 circuit poor electrical connection

How to Fix the DTC P133D 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 P133D 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 P133D 2014 Chevrolet Silverado code?

Need more information on how to fix the P133D 2014 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 P133D 2014 Chevrolet Silverado Code

What does the OBDII code P133D mean on a 2014 Chevrolet Silverado?

P133D indicates "Cylinder 6 Glow Plug Offset Exceeded Learning Limit," meaning the vehicle's engine control module (ECM) has detected an issue with the glow plug system's performance on cylinder 6.

What are the common symptoms of the P133D code?

Common symptoms include difficulty starting the engine in cold weather, rough idling, reduced fuel efficiency, and possibly an illuminated check engine light.

What causes the P133D code to appear?

The code can be caused by a faulty glow plug, wiring issues in the glow plug circuit, a malfunctioning glow plug control module, or carbon buildup affecting the glow plug's performance.

How is the P133D code diagnosed?

Technicians diagnose the code by scanning the ECM for stored trouble codes, inspecting the glow plug and its wiring, testing the glow plug resistance, and checking the control module for proper operation.

Can I still drive my Silverado with the P133D code active?

While the vehicle may still run, driving with this code can lead to harder starts in cold weather and potential long-term damage to the cylinder or engine. Prompt repair is recommended.

How do I fix the P133D code on my 2014 Chevrolet Silverado?

Repairs may include replacing a faulty glow plug, repairing or replacing damaged wiring, cleaning carbon buildup, or replacing the glow plug control module if necessary.

How much does it typically cost to fix the P133D code?

The repair cost can vary but generally ranges from $100 to $300 depending on whether the issue is a glow plug replacement, wiring repair, or control module replacement.

Can a bad glow plug in cylinder 6 damage my engine?

A bad glow plug itself won't typically cause immediate engine damage, but prolonged operation could lead to starting issues, misfires, or excessive strain on other engine components.

Are there any maintenance tips to prevent the P133D code?

Regularly inspect the glow plugs and wiring for wear, clean carbon deposits during routine maintenance, and follow the manufacturer's recommended service intervals.

Will clearing the P133D code with an OBDII scanner solve the problem?

Clearing the code will turn off the check engine light temporarily, but it won't fix the underlying issue. The code will likely return until the root cause is addressed.