AutoCodes – GMC – P25C9 2014 GMC Sierra

P25C9 2014 GMC Sierra Code - Brake System Control Module 2 Requested MIL Illumination

Quick Answer

Control modules constantly monitor the vehicle for any condition which may adversely affect vehicle performance. Common causes include Check Brake System Control Module for codes, Faulty Brake System 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: P25C9 2014 GMC Sierra indicates Brake System Control Module 2 Requested MIL Illumination.
Common causes: Common causes include Check Brake System Control Module for codes, Faulty Brake System 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 216

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 P25C9 2014 GMC Sierra 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 Brake System Control Module indicating that DTC has been set in the module.

OBDII Code P25C9 2014 GMC Sierra - Brake System Control Module 2 Requested MIL Illumination - AutoCodes.com — P25C9 2014 GMC Sierra Code - Brake System Control Module 2 Requested MIL Illumination

What does this mean?

What are the Possible Causes of the DTC P25C9 2014 GMC Sierra?

Check Brake System Control Module for codes
Faulty Brake System Control Module

How to Fix the DTC P25C9 2014 GMC Sierra?

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 P25C9 2014 GMC Sierra 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 P25C9 2014 GMC Sierra code?

Need more information on how to fix the P25C9 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P25C9 2014 GMC Sierra 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 P25C9 2014 GMC Sierra Code

1. What does OBDII code P25C9 mean for a 2014 GMC Sierra?

Code P25C9 indicates an issue with the Brake System Control Module 2 Requested MIL Illumination in a 2014 GMC Sierra.

2. What are the common symptoms of OBDII code P25C9 in a 2014 GMC Sierra?

Common symptoms of code P25C9 may include the malfunction indicator light (MIL) illuminating on the dashboard and potential issues with the brake system.

3. What are possible causes of OBDII code P25C9 in a 2014 GMC Sierra?

Potential causes of code P25C9 in a 2014 GMC Sierra include a faulty brake system control module, wiring issues, or a communication problem within the vehicle's network.

4. How serious is OBDII code P25C9 in a 2014 GMC Sierra?

Code P25C9 should be addressed promptly to ensure the proper functioning of the brake system and to prevent potential safety hazards while driving.

5. Can I continue driving my 2014 GMC Sierra with OBDII code P25C9?

It is not recommended to continue driving the vehicle with code P25C9 present, as it may affect the performance of the brake system. It is advisable to have the issue diagnosed and repaired as soon as possible.

6. How can I diagnose OBDII code P25C9 in my 2014 GMC Sierra?

Diagnosing code P25C9 typically involves using a professional OBDII scanner to retrieve the specific fault codes and performing a thorough inspection of the brake system control module and related components.

7. What are some repair tips for fixing OBDII code P25C9 in a 2014 GMC Sierra?

Repairing code P25C9 may involve replacing the brake system control module, checking and repairing any damaged wiring, or addressing communication issues within the vehicle's network.

8. Can I reset OBDII code P25C9 in my 2014 GMC Sierra without fixing the underlying issue?

While you can clear the code using an OBDII scanner, it is crucial to address the root cause of code P25C9 to prevent it from reoccurring and ensure the proper functioning of the brake system.

9. Is it possible to prevent OBDII code P25C9 from appearing in my 2014 GMC Sierra?

Regular maintenance and inspections of the brake system, including checking the control module and related components, can help prevent issues that may trigger code P25C9 in a 2014 GMC Sierra.

10. How much does it cost to repair OBDII code P25C9 in a 2014 GMC Sierra?

The cost of repairing code P25C9 can vary depending on the specific cause of the issue, the parts needed for replacement, and the labor costs at the repair facility. It is advisable to obtain quotes from different mechanics or dealerships for an accurate estimate.