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Engine-Codes – GMC – P25C9 2014 GMC Sierra

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

Quick Answer

The P25C9 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Brake System Control Module 2 Requested MIL Illumination. Common causes include Faulty brake system control module, Wiring or connector issues, Sensor malfunction. 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 Faulty brake system control module, Wiring or connector issues, Sensor malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P25C9 2014 GMC Sierra Description

The P25C9 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Brake System Control Module 2 Requested MIL Illumination. This code signifies that the brake system control module has detected a fault or anomaly that requires the illumination of the malfunction indicator lamp (MIL) on the dashboard. The brake system control module is a critical component that monitors and controls various functions related to the vehicle's braking system.

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

Common Causes of P25C9 2014 GMC Sierra

  1. Faulty brake system control module
  2. Wiring or connector issues
  3. Sensor malfunction
  4. Communication errors between modules
  5. Corrosion or damage to brake system components

Symptoms of P25C9 2014 GMC Sierra

  1. Illumination of the brake warning light on the dashboard
  2. ABS (anti-lock braking system) malfunction
  3. Decreased braking effectiveness
  4. Unusual noises or vibrations during braking
  5. Difficulty in engaging the parking brake

How to Fix P25C9 2014 GMC Sierra

  1. Perform a comprehensive diagnostic scan to retrieve the specific trouble codes and pinpoint the issue.
  2. Inspect the brake system control module for any visible damage or signs of malfunction.
  3. Check and repair any faulty wiring or connectors in the brake system.
  4. Test and replace any malfunctioning sensors related to the brake system.
  5. Reset the brake system control module and clear any stored trouble codes.

Cost to Fix P25C9 2014 GMC Sierra

The cost of repairing a Brake System Control Module 2 Requested MIL Illumination issue can vary depending on the specific cause of the problem and the extent of repairs needed. On average, the repair cost for this type of issue can range from $200 to $500, including parts and labor. However, it's essential to note that labor rates at auto repair shops can vary significantly, ranging from $80 to $150 per hour. Additional costs may apply for diagnostic testing, parts replacement, and any necessary repairs. For a more accurate estimate, it's recommended to consult with a trusted mechanic or auto repair shop.

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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 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.

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