AutoCodes – Chevrolet – P133A 2014 Chevrolet Silverado

P133A 2014 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 2014 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 221

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 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 P133A 2014 Chevrolet Silverado - Cylinder 3 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133A 2014 Chevrolet Silverado Code - Cylinder 3 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133A 2014 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 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 P133A 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 P133A 2014 Chevrolet Silverado code?

Need more information on how to fix the P133A 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 P133A 2014 Chevrolet Silverado Code

What does the OBDII code P133A mean for a 2014 Chevrolet Silverado?

The P133A code indicates that the glow plug offset for cylinder 3 has exceeded the learning limit, meaning the system has detected an issue with the glow plug or its circuit.

What are the common symptoms of the P133A code?

Common symptoms include difficulty starting in cold weather, rough idling, reduced engine performance, or an illuminated check engine light.

What causes the P133A code to appear?

Causes can include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a malfunctioning glow plug control module, or carbon build-up on the glow plug.

Can I drive my Silverado with the P133A code?

While the truck may still run, driving with this code can lead to increased engine wear, poor cold starts, and potential damage to other components over time.

How do I diagnose the P133A code on a 2014 Chevrolet Silverado?

Diagnosis involves checking the glow plug for cylinder 3, testing the wiring and connectors for continuity, inspecting the glow plug control module, and scanning the system with an advanced diagnostic tool.

What tools are needed to troubleshoot the P133A code?

Common tools include an OBDII scanner, a digital multimeter for testing electrical connections, and possibly a glow plug tester.

How can I fix the P133A code?

Repairs may involve replacing the glow plug for cylinder 3, repairing damaged wiring, cleaning carbon deposits, or replacing the glow plug control module if necessary.

How much does it cost to fix the P133A code?

The repair cost varies, but replacing a single glow plug typically costs $50-$150, plus labor, while wiring repairs or module replacement may cost more.

What maintenance can help prevent the P133A code?

Regularly inspecting and replacing glow plugs as recommended, cleaning carbon deposits, and addressing electrical issues promptly can help prevent this code.

Does the P133A code affect emissions?

Yes, a malfunctioning glow plug can impact combustion, leading to increased emissions, especially during cold starts.