AutoCodes – Buick – P25A2 Buick

P25A2 Buick Code - Brake System 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 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: P25A2 Buick indicates Brake System Control Module 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 2,308

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 P25A2 Buick 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 P25A2 Buick - Brake System Control Module Requested MIL Illumination - AutoCodes.com — P25A2 Buick Code - Brake System Control Module Requested MIL Illumination

What does this mean?

What are the Possible Causes of the DTC P25A2 Buick?

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

How to Fix the DTC P25A2 Buick?

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 P25A2 Buick 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 P25A2 Buick code?

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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 P25A2 Buick Code

1. What are the common symptoms of OBDII code P25A2 in a Buick related to the Brake System Control Module Requested MIL Illumination?

- Common symptoms include the Check Engine light coming on, possible issues with the brake system, and decreased vehicle performance.

2. What are the possible causes of OBDII code P25A2 in a Buick?

- The code P25A2 in a Buick is often triggered by a fault in the brake system control module, wiring issues, or a malfunctioning brake pedal position sensor.

3. How can I diagnose OBDII code P25A2 in my Buick related to the Brake System Control Module Requested MIL Illumination?

- Diagnosing OBDII code P25A2 involves using a diagnostic scanner to retrieve the trouble code, checking the brake system components for any visible damage, and testing the brake pedal position sensor.

4. What are some repair tips for fixing OBDII code P25A2 in a Buick?

- Repair tips may include checking and repairing any damaged wiring, replacing the brake pedal position sensor if faulty, and resetting the trouble code after the repair is completed.

5. Can I continue driving my Buick with OBDII code P25A2 present?

- It is not recommended to continue driving your Buick with OBDII code P25A2 present, as it may indicate potential issues with the brake system that could affect vehicle safety and performance.

6. How much does it typically cost to repair OBDII code P25A2 in a Buick?

- The cost of repairing OBDII code P25A2 in a Buick can vary depending on the exact cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

7. Will resetting the trouble code make OBDII code P25A2 disappear permanently?

- Resetting the trouble code may temporarily remove the Check Engine light, but if the underlying issue causing OBDII code P25A2 is not fixed, the code is likely to reappear.

8. Are there any recalls or service bulletins related to OBDII code P25A2 in Buick vehicles?

- It's recommended to check with the manufacturer or a dealership to inquire about any recalls or service bulletins related to OBDII code P25A2 in Buick vehicles for potential coverage or assistance.

9. Can a DIY enthusiast repair OBDII code P25A2 in a Buick, or is it best left to professionals?

- While some may attempt to diagnose and repair OBDII code P25A2 themselves, it is recommended to consult a professional mechanic with experience in diagnosing and repairing brake system issues for an accurate and safe repair.

10. How long does it typically take to repair OBDII code P25A2 in a Buick?

- The repair time for OBDII code P25A2 in a Buick can vary depending on the exact cause of the issue and the availability of parts, but it may take a few hours to a full day to complete the repair.