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Engine-Codes – Generic – C120A

C120A Code - ABS Pump Pressure Performance

Quick Answer

The C120A code indicates an issue with the ABS pump pressure performance in the vehicle. Common causes include Faulty ABS pump motor, Clogged or dirty ABS pump filter, Low brake fluid levels. 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
C120A indicates ABS Pump Pressure Performance.
Common causes
Common causes include Faulty ABS pump motor, Clogged or dirty ABS pump filter, Low brake fluid levels.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 25, 2024
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Code C120A Description

The C120A code indicates an issue with the ABS pump pressure performance in the vehicle. The ABS (Anti-lock Braking System) pump is responsible for maintaining the hydraulic pressure in the braking system to prevent wheel lock-up during sudden braking or slippery road conditions. When this code is triggered, it typically means that the ABS pump is not functioning properly, which can affect the vehicle's braking performance and overall safety.

OBDII Code C120A - ABS Pump Pressure Performance
C120A Code - ABS Pump Pressure Performance

Common Causes of C120A

  1. Faulty ABS pump motor
  2. Clogged or dirty ABS pump filter
  3. Low brake fluid levels
  4. Broken ABS pressure sensor
  5. Wiring or electrical issues in the ABS system

Symptoms of C120A

  1. Illuminated ABS warning light on the dashboard
  2. Increased stopping distance when braking
  3. Unusual noises coming from the ABS pump area
  4. Brake pedal feels spongy or unresponsive
  5. ABS system may engage unnecessarily or fail to engage when needed

How to Fix C120A

  1. Diagnose the exact cause of the issue using a diagnostic scan tool
  2. Inspect the ABS pump motor, filter, and pressure sensor for any faults
  3. Clean or replace the ABS pump filter if clogged
  4. Repair or replace any damaged wiring or electrical components
  5. Bleed the brake system to ensure proper hydraulic pressure

Cost to Fix C120A

The cost of repairing the ABS pump pressure performance issue can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the repair cost can range from $200 to $800, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get a detailed estimate from a trusted mechanic before proceeding with the repairs.

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Code C120A Information for Specific Makes

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 C120A Code

1. What are common symptoms of OBDII code C120A (ABS Pump Pressure Performance)?

- Common symptoms include illuminated ABS warning light, traction control light, and potential loss of ABS functionality.

2. What are possible causes of OBDII code C120A (ABS Pump Pressure Performance)?

- Possible causes include a faulty ABS pump, damaged ABS sensors, low brake fluid level, or malfunctioning hydraulic control unit.

3. How can I diagnose OBDII code C120A (ABS Pump Pressure Performance)?

- Diagnose the code by using a professional OBDII scanner to read and interpret the ABS system data for specific error codes and sensor readings.

4. Can I drive my vehicle with OBDII code C120A (ABS Pump Pressure Performance)?

- It is not recommended to drive the vehicle with this code, as it can compromise the effectiveness of the ABS system and impact overall braking performance.

5. How can I repair OBDII code C120A (ABS Pump Pressure Performance)?

- Repair options include checking and replacing the ABS pump, inspecting and replacing ABS sensors, verifying brake fluid levels, and ensuring proper hydraulic control unit function.

6. Is it safe to continue driving if the ABS warning light is on due to code C120A?

- It is not safe to drive with the ABS warning light on, as it indicates a potential issue with the ABS system that could affect braking performance.

7. Can a DIY enthusiast perform repairs for OBDII code C120A?

- While some basic diagnostics can be performed by DIY enthusiasts, it is recommended to consult a professional mechanic for accurate diagnosis and repair of ABS system issues.

8. How much does it typically cost to repair OBDII code C120A (ABS Pump Pressure Performance)?

- Repair costs can vary depending on the specific issue causing the code, but expect to pay for parts and labor, with potential costs ranging from a couple of hundred to over a thousand dollars.

9. Are there any temporary solutions to address OBDII code C120A until it can be repaired?

- There are no recommended temporary solutions for this ABS-related code, as it is crucial to address the underlying issue promptly to ensure vehicle safety.

10. How often should the ABS system be inspected to prevent OBDII code C120A from occurring?

- It is recommended to have the ABS system inspected as part of regular vehicle maintenance to detect and address potential issues before they trigger OBDII code C120A.

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