AutoCodes – GMC – C12E2 GMC

C12E2 GMC Code - Electronic Brake Control Module Supply Circuit High Voltage

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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
C12E2 GMC indicates Electronic Brake Control Module Supply Circuit High Voltage.
Common causes
Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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 758
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 05, 2020
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Code C12E2 GMC Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Powertrain Control Module (PCM) sets the OBDII code when the Electronic Brake Control Module (EBCM) is not to factory specifications.
OBDII Code C12E2 GMC - Electronic Brake Control Module Supply Circuit High Voltage - AutoCodes.com
C12E2 GMC Code - Electronic Brake Control Module Supply Circuit High Voltage

What are the Possible Causes of the DTC C12E2 GMC?

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

How to Fix the DTC C12E2 GMC?

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 C12E2 GMC 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 C12E2 GMC 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 C12E2 GMC Code

1. What are the common symptoms of OBDII code C12E2 GMC (Electronic Brake Control Module Supply Circuit High Voltage)?

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

2. What can cause OBDII code C12E2 GMC to trigger?

- This code is typically triggered by a high voltage condition detected in the electronic brake control module supply circuit, which can be caused by wiring issues, a faulty brake control module, or a damaged sensor.

3. How serious is OBDII code C12E2 GMC?

- This code indicates a potential issue with the electronic brake control module supply circuit, which can affect the proper operation of the ABS system. It is important to address this issue promptly to ensure the safety and performance of the vehicle's braking system.

4. What are some possible DIY repair tips for OBDII code C12E2 GMC?

- DIY repair tips may include checking the wiring harness for any damage or loose connections, inspecting the brake control module for signs of malfunction, and verifying the condition of related sensors. However, it is recommended to consult a professional for accurate diagnosis and repair.

5. Can driving with OBDII code C12E2 GMC pose any risks?

- Driving with this code present may lead to compromised ABS functionality and potentially affect the vehicle's braking performance, especially in emergency situations. It is advisable to address the issue promptly to ensure safe driving conditions.

6. How is OBDII code C12E2 GMC diagnosed?

- Diagnosis typically involves using a diagnostic scanner to retrieve the fault code, conducting a visual inspection of the wiring and components in the electronic brake control module circuit, and performing further testing as needed to pinpoint the exact cause of the issue.

7. Is it safe to continue driving with the ABS warning light on due to OBDII code C12E2 GMC?

- It is not recommended to continue driving with the ABS warning light on, as it indicates a potential problem with the ABS system that can compromise braking performance. It is best to address the issue promptly to ensure safe operation of the vehicle.

8. How much does it cost to repair OBDII code C12E2 GMC?

- Repair costs for this code can vary depending on the underlying cause of the issue, the extent of the repairs needed, and labor rates in your area. It is advisable to obtain a diagnosis from a qualified mechanic to get an accurate estimate of repair costs.

9. Can OBDII code C12E2 GMC be cleared/reset without fixing the underlying issue?

- While the fault code can be cleared/reset using a diagnostic scanner, it is important to note that the underlying issue causing the code to trigger will still remain unresolved. It is recommended to address the root cause of the problem to prevent future issues.

10. How can a professional mechanic help with OBDII code C12E2 GMC?

- A professional mechanic can accurately diagnose the cause of the code, perform necessary repairs or replacements on the affected components, reset the fault code, and ensure the proper functioning of the electronic brake control module supply circuit.

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