AutoCodes – Chevrolet – P26C9 Chevrolet

P26C9 Chevrolet Code - Auxiliary Chassis Control Module Requested MIL Illumination

Quick Answer

Control modules constantly monitor the vehicle for any condition which may adversely affect vehicle performance. Common causes include Check Auxiliary Chassis Control Module for codes, Faulty Auxiliary Chassis Control Module. 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: P26C9 Chevrolet indicates Auxiliary Chassis Control Module Requested MIL Illumination.
Common causes: Common causes include Check Auxiliary Chassis Control Module for codes, Faulty Auxiliary Chassis Control Module.
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 312

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 Jul 15, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P26C9 Chevrolet Description

Control modules constantly monitor the vehicle for any condition which may adversely affect vehicle performance. If a condition is detected, the module sets a Diagnostic Trouble Code (DTC) and sends a serial data message to the Engine Control Module (ECM). The ECM sets a DTC to inform that the module has set a DTC. The serial data message sent by the module also contains a request for the ECM to illuminate the Malfunction Indicator Lamp (MIL).
The DTC will be set when the ECM receives a serial data message from the Auxiliary Chassis Control Module indicating that DTC has been set in the module.

OBDII Code P26C9 Chevrolet - Auxiliary Chassis Control Module Requested MIL Illumination - AutoCodes.com — P26C9 Chevrolet Code - Auxiliary Chassis Control Module Requested MIL Illumination

What does this mean?

What are the Possible Causes of the DTC P26C9 Chevrolet?

Check Auxiliary Chassis Control Module for codes
Faulty Auxiliary Chassis Control Module

How to Fix the DTC P26C9 Chevrolet?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P26C9 Chevrolet 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 P26C9 Chevrolet code?

Need more information on how to fix the P26C9 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P26C9 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P26C9 2014 Chevrolet Silverado — Auxiliary Chassis Control Module Requested MIL Illumination
P26C9 2015 Chevrolet Silverado — Auxiliary Chassis Control Module Requested MIL Illumination
P26C9 2016 Chevrolet Silverado — Auxiliary Chassis Control Module Requested MIL Illumination
P26C9 2017 Chevrolet Silverado — Auxiliary Chassis Control Module Requested MIL Illumination
P26C9 2018 Chevrolet Silverado — Auxiliary Chassis Control Module Requested MIL Illumination

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 P26C9 Chevrolet Code

What are the common symptoms of OBDII code P26C9 in a Chevrolet vehicle?

Common symptoms may include the check engine light (MIL) illuminating on the dashboard, reduced performance, and potential transmission issues.

What usually causes the OBDII code P26C9 in a Chevrolet?

This code is commonly triggered by a malfunction in the auxiliary chassis control module, which is responsible for managing various vehicle systems.

How serious is the OBDII code P26C9 in a Chevrolet?

While the severity can vary, it is recommended to address this code promptly to prevent potential drivability issues and further damage to the vehicle.

How can I diagnose the OBDII code P26C9 in my Chevrolet?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code and then conducting a thorough inspection of the auxiliary chassis control module and related components.

Can I continue driving my Chevrolet with the OBDII code P26C9?

It is not advisable to continue driving the vehicle with this code present, as it may lead to further complications and potential safety hazards.

What are some repair tips for fixing the OBDII code P26C9 in a Chevrolet?

Repairing this code may involve inspecting and potentially replacing the auxiliary chassis control module, as well as addressing any wiring or connection issues.

Is it possible to reset the OBDII code P26C9 in a Chevrolet without repairs?

While clearing the code may temporarily turn off the check engine light, it is crucial to address the underlying issue to prevent future problems.

How much does it typically cost to repair the OBDII code P26C9 in a Chevrolet?

The cost of repairs can vary depending on the extent of the issue, the labor rates of the repair shop, and the price of any necessary parts.

Can a DIY enthusiast fix the OBDII code P26C9 in a Chevrolet?

While some experienced DIY enthusiasts may be able to address this code, it is often recommended to consult a professional mechanic for accurate diagnosis and repair.