AutoCodes – Buick – C0254 Buick

C0254 Buick Code - Electronic Brake Control Module Control Valve Circuit Malfunction

Quick Answer

The Anti-Lock Brake System (ABS) relay supplies battery voltage to six valve solenoids. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) circuit poor electrical connection. 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
C0254 Buick indicates Electronic Brake Control Module Control Valve Circuit Malfunction.
Common causes
Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) circuit poor electrical connection.
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 1,338
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 03, 2020
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Code C0254 Buick Description

The Anti-Lock Brake System (ABS) relay supplies battery voltage to six valve solenoids. The Electronic Brake Control Module (EBCM) microprocessor applies the grounds needed to activate each solenoid. The low side of each solenoid coil has a feedback circuit to the EBCM microprocessor. When a solenoid is commanded OFF, the feedback voltage is high. When a solenoid is commanded ON, the feedback voltage is low.
OBDII Code C0254 Buick - Electronic Brake Control Module Control Valve Circuit Malfunction - AutoCodes.com
C0254 Buick Code - Electronic Brake Control Module Control Valve Circuit Malfunction

What are the Possible Causes of the DTC C0254 Buick?

  • Faulty Electronic Brake Control Module (EBCM)
  • Electronic Brake Control Module (EBCM) harness is open or shorted
  • Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C0254 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 C0254 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.

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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 C0254 Buick Code

1. What does the OBDII code C0254 mean on a Buick?

C0254 indicates a malfunction in the control valve circuit of the Electronic Brake Control Module (EBCM), which is a key part of the anti-lock braking system (ABS).

2. What are the common symptoms of code C0254 on a Buick?

Symptoms may include the ABS warning light illuminated, reduced braking performance, or the ABS system not functioning properly.

3. What causes the C0254 code to appear on a Buick?

Common causes include damaged wiring or connectors in the control valve circuit, a faulty Electronic Brake Control Module, or an issue with the control valve itself.

4. Can I drive my Buick with the C0254 code active?

While the vehicle may still be drivable, the ABS system might not function correctly, compromising braking performance in slippery conditions. It's best to address the issue promptly.

5. How do I diagnose the C0254 code on my Buick?

Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check for proper voltage in the control valve circuit and scan the EBCM for additional fault codes.

6. How is the C0254 code fixed on a Buick?

Repairs may involve replacing damaged wiring, cleaning or reconnecting corroded connectors, or replacing the faulty EBCM or control valve.

7. How much does it cost to fix the C0254 code on a Buick?

Costs vary depending on the specific issue but can range from $100 for minor wiring repairs to $1,000 or more if the EBCM needs replacement.

8. Can a faulty EBCM cause other issues besides the C0254 code?

Yes, a failing EBCM can cause other ABS-related codes, braking malfunctions, or loss of traction control functionality.

9. Will clearing the C0254 code fix the issue on my Buick?

Clearing the code may turn off the warning light temporarily, but the underlying issue must be repaired to prevent the code from returning.

10. Is it possible to prevent the C0254 code on a Buick?

Regular maintenance, including inspecting the ABS wiring and components for wear or damage, can help prevent this code from appearing.

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