AutoCodes – Generic – C12E0

C12E0 Code - ABS Pump Motor Performance

Quick Answer

The ABS Pump Motor is a bi-directional motor and is an internal part of 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: C12E0 indicates ABS Pump Motor Performance.
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.

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Code Popularity 3,587

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 C12E0 Description

The ABS Pump Motor is a bi-directional motor and is an internal part of the Brake Pressure Modulator. There are three solid state relays in the electronic Brake Pressure Modulator that operate the pump. The ABS Pump Motor runs every few brake stops in order to fill the high pressure accumulator with brake fluid. The Anti-Lock Brake System (ABS) Module monitors the ABS Pump Motor. The ABS Module sets the OBDII code when the ABS Pump Motor is not to factory specifications.

OBDII Code C12E0 - ABS Pump Motor Performance - AutoCodes.com — C12E0 Code - ABS Pump Motor Performance

What does this mean?

What are the Possible Causes of the DTC C12E0?

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

How to Fix the DTC C12E0?

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 C12E0 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 C12E0 code?

Need more information on how to fix the C12E0 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C12E0 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C12E0 Buick — ABS Pump Motor Performance
C12E0 Cadillac — ABS Pump Motor Performance
C12E0 Chevrolet — ABS Pump Motor Performance
C12E0 GMC — ABS Pump Motor Performance

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 C12E0 Code

1. What are common symptoms of OBDII code C12E0 (ABS Pump Motor Performance)?

- Common symptoms include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential issues with braking performance.

2. What are possible causes of OBDII code C12E0 (ABS Pump Motor Performance)?

- Possible causes include a malfunctioning ABS pump motor, damaged wiring or connectors, low brake fluid levels, or a failing ABS control module.

3. How can I diagnose the source of OBDII code C12E0 (ABS Pump Motor Performance)?

- Diagnose the issue by conducting a visual inspection of the ABS system components, checking brake fluid levels, testing the ABS pump motor, and scanning for additional related fault codes.

4. Can driving with OBDII code C12E0 (ABS Pump Motor Performance) pose a safety risk?

- Driving with this code may compromise the effectiveness of the ABS system, leading to potential safety hazards such as reduced braking performance and increased stopping distances.

5. How can I repair OBDII code C12E0 (ABS Pump Motor Performance)?

- Repair methods may involve replacing the faulty ABS pump motor, repairing damaged wiring or connectors, refilling brake fluid to the correct level, or recalibrating the ABS system.

6. Is it recommended to clear OBDII code C12E0 (ABS Pump Motor Performance) after making repairs?

- Yes, it is advisable to clear the code after completing repairs to reset the ABS system and ensure proper functionality. However, if the issue persists, further diagnosis may be necessary.

7. Can OBDII code C12E0 (ABS Pump Motor Performance) be triggered by other ABS system components?

- Yes, other components such as the ABS control module or wheel speed sensors can contribute to triggering this code, so a comprehensive diagnosis is essential.

8. Are there any preventive measures to avoid OBDII code C12E0 (ABS Pump Motor Performance)?

- Regular maintenance of the ABS system, including checking brake fluid levels, inspecting wiring connections, and addressing any ABS warning lights promptly, can help prevent this code from appearing.

9. Will OBDII code C12E0 (ABS Pump Motor Performance) affect the vehicle's overall drivability?

- While the vehicle may still be driveable with this code, the compromised ABS system performance can impact safety and overall drivability, particularly in emergency braking situations.

10. How long does it typically take to repair OBDII code C12E0 (ABS Pump Motor Performance)?

- The repair time can vary depending on the specific cause of the issue. Simple fixes like replenishing brake fluid may take a short time, while replacing the ABS pump motor or conducting complex diagnostics may require more time.