AutoCodes – Buick – C12E9 Buick

C12E9 Buick Code - ABS Pump Motor Stuck On

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: C12E9 Buick indicates ABS Pump Motor Stuck On.
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 1,018

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 C12E9 Buick 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 C12E9 Buick - ABS Pump Motor Stuck On - AutoCodes.com — C12E9 Buick Code - ABS Pump Motor Stuck On

What does this mean?

What are the Possible Causes of the DTC C12E9 Buick?

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

How to Fix the DTC C12E9 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 C12E9 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 C12E9 Buick 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 C12E9 Buick Code

1. What are the common symptoms of OBDII code C12E9 in a Buick related to the ABS Pump Motor Stuck On?

- The common symptoms include the ABS warning light staying illuminated on the dashboard, the ABS system not functioning properly, and possible issues with braking performance.

2. What can cause the ABS pump motor to be stuck on in a Buick triggering the C12E9 code?

- The most common causes include a malfunctioning ABS pump motor, a faulty ABS control module, wiring issues, or sensor problems within the ABS system.

3. How serious is the OBDII code C12E9 indicating the ABS Pump Motor Stuck On in a Buick?

- This issue is considered serious as it can affect the proper functioning of the vehicle's ABS system, potentially compromising braking performance and overall safety.

4. Can driving with the ABS Pump Motor Stuck On in a Buick be dangerous?

- Yes, driving with this issue can be dangerous as it may lead to unpredictable ABS system behavior, longer stopping distances, and an increased risk of losing control during emergency braking situations.

5. What should I do if I encounter the OBDII code C12E9 related to the ABS Pump Motor Stuck On in my Buick?

- It is recommended to have the ABS system inspected and repaired by a qualified mechanic as soon as possible to ensure the safety and proper functionality of the vehicle.

6. How can I diagnose the ABS Pump Motor Stuck On issue in my Buick if I have basic automotive knowledge?

- Basic diagnostic steps include checking the ABS fuse, inspecting the ABS sensors and wiring for damage, and using an OBDII scanner to read and clear the trouble code.

7. Is it possible to reset the OBDII code C12E9 related to the ABS Pump Motor Stuck On in a Buick by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is not a recommended long-term solution as the underlying issue causing the code will still need to be addressed.

8. Can I continue driving my Buick with the ABS Pump Motor Stuck On if I don't rely on the ABS system?

- While it may be possible to drive the vehicle without using the ABS system, it is not advisable due to safety concerns and the potential impact on overall braking performance.

9. How much does it typically cost to repair the ABS Pump Motor Stuck On issue in a Buick?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the ABS pump motor, repairing wiring or sensor problems, or reprogramming the ABS control module.

10. Is the ABS Pump Motor Stuck On issue covered under any warranty for Buick vehicles?

- Depending on the vehicle's age and warranty status, this issue may be covered under the manufacturer's warranty or an extended warranty, so it's advisable to check with a Buick dealership for more information.