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Engine-Codes – GMC – C0246 GMC

C0246 GMC Code - Electronic Brake Control Module Control Valve Circuit Malfunction

Quick Answer

The C0246 GMC code indicates a malfunction in the Electronic Brake Control Module Control Valve Circuit. Common causes include Faulty control valve solenoid within the EBCM, Corrosion or damage to the wiring harness connecting the control valve circuit, Poor electrical connections or loose terminals in the EBCM. 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
C0246 GMC indicates Electronic Brake Control Module Control Valve Circuit Malfunction.
Common causes
Common causes include Faulty control valve solenoid within the EBCM, Corrosion or damage to the wiring harness connecting the control valve circuit, Poor electrical connections or loose terminals in the EBCM.
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 12, 2024
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Code C0246 GMC Description

The C0246 GMC code indicates a malfunction in the Electronic Brake Control Module Control Valve Circuit. The Electronic Brake Control Module (EBCM) is an essential component of the vehicle's anti-lock braking system (ABS) and traction control system. When this code is triggered, it means that there is a problem with the control valve circuit within the EBCM, which can affect the vehicle's braking performance and overall safety.

OBDII Code C0246 GMC - Electronic Brake Control Module Control Valve Circuit Malfunction
C0246 GMC Code - Electronic Brake Control Module Control Valve Circuit Malfunction

Common Causes of C0246 GMC

  1. Faulty control valve solenoid within the EBCM.
  2. Corrosion or damage to the wiring harness connecting the control valve circuit.
  3. Poor electrical connections or loose terminals in the EBCM.
  4. Internal EBCM malfunction due to water intrusion or contamination.
  5. Power supply issues affecting the EBCM's operation.

Symptoms of C0246 GMC

  1. Illumination of the ABS warning light on the dashboard.
  2. Increased stopping distances when braking.
  3. Loss of ABS functionality, resulting in wheel lock-up during braking.
  4. Traction control system failure, leading to loss of traction on slippery roads.
  5. Unusual noises or vibrations coming from the ABS system during braking.

How to Fix C0246 GMC

  1. Begin by diagnosing the specific cause of the C0246 code using a professional automotive scan tool.
  2. Inspect the wiring harness and connectors for any signs of damage or corrosion, repairing or replacing as necessary.
  3. Test the control valve solenoid for proper operation and replace if faulty.
  4. Check the power supply to the EBCM and ensure it is within the specified voltage range.
  5. Clear the code from the EBCM's memory and perform a road test to verify that the issue has been resolved.

Cost to Fix C0246 GMC

The cost of repairing a C0246 GMC code can vary depending on the extent of the issue and the specific components that need to be replaced. In general, the parts required for this repair, such as a new control valve solenoid or wiring harness, can range from $100 to $300. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time varying based on the complexity of the issue. Overall, the total cost of addressing this code could range from $200 to $500, but it's advisable to check with local repair shops for a more accurate estimate.

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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 C0246 GMC Code

1. What are the common symptoms of OBDII code C0246 GMC?

The common symptoms of code C0246 include the illumination of the ABS warning light on the dashboard, potential loss of ABS functionality, and possible issues with braking performance.

2. What can cause the OBDII code C0246 GMC to trigger?

The C0246 code is typically triggered by a malfunction in the electronic brake control module control valve circuit, which can be caused by wiring issues, a faulty control module, or a malfunctioning control valve.

3. How serious is the OBDII code C0246 GMC?

While the C0246 code may not always result in immediate safety concerns, it is important to address it promptly to ensure the proper functionality of the electronic brake control module and ABS system.

4. How can I diagnose the OBDII code C0246 GMC?

Diagnosing the C0246 code involves using an OBDII scanner to retrieve the code, conducting a visual inspection of the wiring and connections related to the electronic brake control module, and performing further testing to pinpoint the exact cause of the malfunction.

5. Can I still drive my vehicle with the OBDII code C0246 GMC?

It is generally not recommended to drive your vehicle with an unresolved C0246 code, as it can affect the performance of your ABS system and compromise your vehicle's braking capabilities.

6. How can I repair the OBDII code C0246 GMC?

Repairing the C0246 code may involve repairing or replacing damaged wiring, replacing the electronic brake control module, or addressing any issues with the control valve. It is recommended to consult with a professional mechanic for an accurate diagnosis and proper repair.

7. Will resetting the OBDII code C0246 GMC turn off the warning light?

Resetting the code may temporarily turn off the warning light, but if the underlying issue is not addressed, the code is likely to reappear, and the ABS warning light may illuminate again.

8. Are there any preventive measures to avoid the OBDII code C0246 GMC?

Regular maintenance of your vehicle's braking system, including checking the wiring and connections related to the electronic brake control module, can help prevent issues that may trigger the C0246 code.

9. Can a DIY enthusiast fix the OBDII code C0246 GMC?

While some DIY enthusiasts may have the skills to address simple wiring issues or component replacements, dealing with the electronic brake control module and ABS system can be complex. It is advisable to seek professional help for proper diagnosis and repair.

10. How much does it cost to fix the OBDII code C0246 GMC?

The cost of fixing the C0246 code can vary depending on the underlying cause of the malfunction, the necessary repairs or replacements, and labor costs. It is recommended to obtain quotes from reputable mechanics or repair shops for an accurate estimate.

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