AutoCodes – Generic – C12E5

C12E5 Code - Brake Pedal Position Sensor Reference Circuit

Quick Answer

The Electronic Brake Control Module (EBCM) monitors the Brake Pedal Position Sensor. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor 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: C12E5 indicates Brake Pedal Position Sensor Reference Circuit.
Common causes: Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor 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 727

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C12E5 Description

The Electronic Brake Control Module (EBCM) monitors the Brake Pedal Position Sensor. The EBCM sets the OBDII code when the Brake Pedal Position Sensor is not to factory specifications.

OBDII Code C12E5 - Brake Pedal Position Sensor Reference Circuit - AutoCodes.com — C12E5 Code - Brake Pedal Position Sensor Reference Circuit

What does this mean?

What are the Possible Causes of the DTC C12E5?

Faulty Brake Pedal Position Sensor
Brake Pedal Position Sensor harness is open or shorted
Brake Pedal Position Sensor circuit poor electrical connection

How to Fix the DTC C12E5?

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 C12E5 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 C12E5 code?

Need more information on how to fix the C12E5 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C12E5 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C12E5 Buick — Brake Pedal Position Sensor Reference Circuit
C12E5 Cadillac — Brake Pedal Position Sensor Reference Circuit
C12E5 Chevrolet — Brake Pedal Position Sensor Reference Circuit
C12E5 GMC — Brake Pedal Position Sensor Reference Circuit

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 C12E5 Code

1. What are common symptoms of OBDII code C12E5 (Brake Pedal Position Sensor Reference Circuit)?

Symptoms may include erratic brake lights, issues with the cruise control system, and the illumination of the brake warning light on the dashboard.

2. What can cause OBDII code C12E5 to trigger?

Possible causes include a faulty brake pedal position sensor, damaged wiring or connectors in the sensor circuit, or a defective brake control module.

3. How can I diagnose the issue related to OBDII code C12E5?

Diagnosis typically involves using a professional OBDII scanner to read the code, testing the brake pedal position sensor using a multimeter, and inspecting the sensor wiring and connections for any visible damage.

4. Can I still drive my vehicle with OBDII code C12E5 present?

It is not recommended to drive with this code present, as it can affect the proper functioning of the brake system and other related components.

5. How can I repair OBDII code C12E5 (Brake Pedal Position Sensor Reference Circuit)?

Repair may involve replacing the faulty brake pedal position sensor, repairing or replacing damaged wiring or connectors, or reprogramming the brake control module if necessary.

6. Is it safe to continue driving if the brake warning light is illuminated due to OBDII code C12E5?

It is not safe to continue driving with the brake warning light illuminated, as it indicates a potential issue with the brake system that requires immediate attention.

7. Can a DIY enthusiast fix OBDII code C12E5 at home?

Depending on the level of expertise, a DIY enthusiast may be able to diagnose and repair OBDII code C12E5 by following proper diagnostic procedures and using the necessary tools.

8. How much does it typically cost to repair OBDII code C12E5?

Repair costs can vary depending on the underlying issue, the labor rates in your area, and the cost of any replacement parts needed. It is recommended to obtain quotes from reputable repair shops.

9. Will resetting the OBDII code C12E5 make it go away permanently?

Resetting the code may temporarily turn off the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

10. Can OBDII code C12E5 affect the overall performance of the vehicle?

Yes, OBDII code C12E5 can affect the performance of the vehicle by impacting the proper operation of the brake system and related components, potentially leading to safety hazards if left unresolved.