AutoCodes – Cadillac – C12FE Cadillac

C12FE Cadillac Code - ABS Pump Pressure Loss

Quick Answer

The boost pressure valve is internal to the brake pressure modulator. Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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
C12FE Cadillac indicates ABS Pump Pressure Loss.
Common causes
Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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 1,974
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 07, 2020
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Code C12FE Cadillac Description

The boost pressure valve is internal to the brake pressure modulator. The Electronic Brake Control Module (EBCM) monitors the boost pressure. The boost valve controls the amount of hydraulic boost required during braking or a vehicle stability event.
When a boost fault condition is detected, the boost control will continue applying as much pressure as possible until boost pressure is no longer available.
OBDII Code C12FE Cadillac - ABS Pump Pressure Loss - AutoCodes.com
C12FE Cadillac Code - ABS Pump Pressure Loss

What are the Possible Causes of the DTC C12FE Cadillac?

  • Faulty Brake Pressure Modulator
  • Brake Pressure Modulator harness is open or shorted
  • Brake Pressure Modulator circuit poor electrical connection

How to Fix the DTC C12FE Cadillac?

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 C12FE Cadillac 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 C12FE Cadillac code?

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Need Help with the Code?

Get the C12FE Cadillac 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 C12FE Cadillac Code

1. What are the common symptoms of OBDII code C12FE in a Cadillac related to ABS pump pressure loss?

The common symptoms include the ABS warning light coming on, decreased braking performance, and potential activation of the vehicle's traction control system.

2. What are some possible causes of OBDII code C12FE indicating ABS pump pressure loss in a Cadillac?

Possible causes include a faulty ABS pump motor, air in the ABS hydraulic system, a malfunctioning pressure sensor, or a damaged ABS pump assembly.

3. How can I diagnose the OBDII code C12FE related to ABS pump pressure loss in my Cadillac?

Diagnosis typically involves using a professional diagnostic scanner to retrieve the specific fault codes, inspecting the ABS hydraulic system for leaks or air bubbles, and testing the pressure sensor and ABS pump motor for proper functionality.

4. Can I continue driving my Cadillac with the OBDII code C12FE indicating ABS pump pressure loss?

It is not recommended to drive the vehicle with this code present, as it can compromise the effectiveness of the ABS system and potentially lead to safety issues during braking.

5. How can I repair OBDII code C12FE showing ABS pump pressure loss in my Cadillac?

Repair methods may vary depending on the root cause, but common solutions include replacing the ABS pump assembly, bleeding the ABS hydraulic system to remove air pockets, or repairing/replacing the pressure sensor.

6. Are there any safety precautions I should take when working on the ABS system to address code C12FE in my Cadillac?

Safety precautions include disconnecting the vehicle's battery before starting any repair work, using proper tools and equipment, and following manufacturer guidelines to prevent injury or damage to the vehicle.

7. Can a DIY enthusiast fix OBDII code C12FE related to ABS pump pressure loss in a Cadillac?

While some basic diagnostic steps can be performed by DIY enthusiasts, repairing the ABS system to address this code may require advanced knowledge and specialized tools, so professional assistance is often recommended.

8. How do I reset the OBDII code C12FE for ABS pump pressure loss after making the necessary repairs in my Cadillac?

After repairing the issue causing the code, the code can be cleared using a diagnostic scanner or by disconnecting the vehicle's battery for a period of time to reset the system.

9. How can regular maintenance help prevent OBDII code C12FE indicating ABS pump pressure loss in a Cadillac?

Regularly checking and servicing the ABS system, including inspecting for leaks, keeping the system free of air bubbles, and replacing worn components, can help prevent issues leading to this code.

10. Is it advisable to seek professional help for diagnosing and repairing OBDII code C12FE related to ABS pump pressure loss in a Cadillac?

Yes, due to the complexity of the ABS system and the importance of proper repair to ensure safety, seeking professional help from a certified mechanic or dealership is recommended for accurate diagnosis and effective repair of this code.

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