AutoCodes – Buick – C12E6 Buick

C12E6 Buick Code - ABS Power Switch Circuit Open

Quick Answer

The Electronic Brake Control Module (EBCM) monitors the ABS Power Switch. Common causes include Faulty ABS Power Switch, ABS Power Switch harness is open or shorted, ABS Power Switch 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
C12E6 Buick indicates ABS Power Switch Circuit Open.
Common causes
Common causes include Faulty ABS Power Switch, ABS Power Switch harness is open or shorted, ABS Power Switch 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 741
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 C12E6 Buick Description

The Electronic Brake Control Module (EBCM) monitors the ABS Power Switch. The EBCM sets the OBDII code when the ABS Power Switch is not to factory specifications.
OBDII Code C12E6 Buick - ABS Power Switch Circuit Open - AutoCodes.com
C12E6 Buick Code - ABS Power Switch Circuit Open

What are the Possible Causes of the DTC C12E6 Buick?

  • Faulty ABS Power Switch
  • ABS Power Switch harness is open or shorted
  • ABS Power Switch circuit poor electrical connection

How to Fix the DTC C12E6 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 C12E6 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 C12E6 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 C12E6 Buick Code

1. What does the OBDII code C12E6 mean on a Buick?

C12E6 indicates an issue with the ABS power switch circuit, specifically an open circuit that is preventing proper communication or operation within the ABS system.

2. What are the common symptoms of code C12E6 on a Buick?

Symptoms may include the ABS warning light illuminated, loss of ABS functionality, reduced braking performance, and potentially erratic braking behavior.

3. What causes code C12E6 to appear?

Common causes include a faulty ABS power switch, damaged or corroded wiring in the circuit, a blown fuse, or a malfunctioning ABS control module.

4. Can I still drive my Buick with the C12E6 code present?

Yes, you can drive the vehicle, but the ABS system may be disabled, which could increase the risk of skidding or losing control during hard braking or on slippery surfaces.

5. How do I diagnose the C12E6 code on my Buick?

Start by inspecting the ABS power switch, checking the wiring and connectors for damage or corrosion, and testing for continuity in the circuit. Also, verify the fuse and power supply to the ABS module.

6. What repairs are typically needed to fix code C12E6 on a Buick?

Repairs may involve replacing the ABS power switch, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the ABS control module if it is determined to be faulty.

7. How much does it cost to fix the C12E6 ABS power switch circuit open issue?

Repair costs vary, but replacing a faulty ABS power switch can range from $100 to $300, while more extensive repairs like module replacement may cost $500 or more.

8. Can a low battery cause code C12E6 on a Buick?

A low or weak battery typically won't directly cause C12E6, but voltage issues can sometimes lead to communication errors in the ABS system, so it's worth checking the battery and charging system.

9. Will clearing the C12E6 code fix the problem?

Clearing the code may turn off the warning light temporarily, but the underlying issue with the ABS power switch circuit must be resolved to prevent the code from returning.

10. Is C12E6 a common issue in Buick vehicles?

While not extremely common, issues with the ABS power switch circuit can occur due to age, wear and tear, or exposure to harsh conditions that degrade wiring and connections.

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