AutoCodes – Hummer – C0254 Hummer

C0254 Hummer 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 Hummer 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 1,434
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 Hummer 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 Hummer - Electronic Brake Control Module Control Valve Circuit Malfunction - AutoCodes.com
C0254 Hummer Code - Electronic Brake Control Module Control Valve Circuit Malfunction

What are the Possible Causes of the DTC C0254 Hummer?

  • 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 Hummer?

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 Hummer 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 C0254 Hummer code?

Need more information on how to fix the C0254 Hummer code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0254 Hummer 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 C0254 Hummer Code

1. What are the common symptoms of OBDII code C0254 in a Hummer?

- Common symptoms include the illumination of the ABS warning light on the dashboard, potential loss of traction control functionality, and possible issues with the vehicle's brake system.

2. What does the OBDII code C0254 for a Hummer indicate?

- The code C0254 indicates a malfunction in the Electronic Brake Control Module Control Valve Circuit, specifically related to the control valve's operation within the ABS system.

3. What are the possible causes of OBDII code C0254 in a Hummer?

- Possible causes of this code include a faulty electronic brake control module, damaged wiring or connectors in the control valve circuit, or issues with the control valve itself.

4. How can I diagnose the Electronic Brake Control Module Control Valve Circuit malfunction in my Hummer?

- Diagnosing this issue typically involves using an OBDII scanner to retrieve the specific fault code, conducting a visual inspection of the wiring and connectors, and potentially performing resistance or continuity tests on the control valve circuit.

5. Can I continue driving my Hummer with OBDII code C0254?

- It is not recommended to continue driving the vehicle with this code present, as it may affect the proper operation of the ABS system and compromise overall safety.

6. How can I repair OBDII code C0254 in my Hummer?

- Repairing this code may involve replacing the electronic brake control module, repairing or replacing damaged wiring or connectors, or addressing any issues with the control valve itself.

7. Is it possible to reset OBDII code C0254 in a Hummer using a simple reset tool?

- While clearing the fault code with an OBDII scanner may temporarily turn off the warning light, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

8. Are there any common mistakes to avoid when dealing with OBDII code C0254 in a Hummer?

- Common mistakes include ignoring the warning light, neglecting proper diagnosis and repair, or attempting to clear the code without fixing the root cause of the issue.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code C0254 in a Hummer?

- Depending on the individual's skill level, it may be possible to address this code with basic automotive knowledge, but complex diagnostics and repairs may require professional assistance.

10. How much can I expect to pay for repairing OBDII code C0254 in a Hummer at a professional auto repair shop?

- The cost of repairing this issue can vary depending on the specific cause and the labor rates of the repair shop. It is advisable to obtain a detailed estimate before proceeding with the repairs.

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