Engine-CodesSubaru – C0122 Subaru

C0122 Subaru Code - Front Inlet Valve Right

Quick Answer

The C0122 code for Subaru vehicles specifically refers to an issue with the front inlet valve on the right side of the vehicle. Common causes include Faulty front inlet valve: The valve itself may be defective or damaged, causing it to malfunction and trigger the C0122 code, Contaminated brake fluid: Dirt or debris in the brake fluid can clog the front inlet valve, preventing it from operating correctly, Wiring issues: Electrical problems such as a short circuit or damaged wiring can disrupt communication with the front inlet valve, leading to a malfunction. 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
C0122 Subaru indicates Front Inlet Valve Right.
Common causes
Common causes include Faulty front inlet valve: The valve itself may be defective or damaged, causing it to malfunction and trigger the C0122 code, Contaminated brake fluid: Dirt or debris in the brake fluid can clog the front inlet valve, preventing it from operating correctly, Wiring issues: Electrical problems such as a short circuit or damaged wiring can disrupt communication with the front inlet valve, leading to a malfunction.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code C0122 Subaru Description

The C0122 code for Subaru vehicles specifically refers to an issue with the front inlet valve on the right side of the vehicle. This valve is a crucial component of the vehicle's braking system, responsible for controlling the flow of brake fluid to the front right wheel. When this valve malfunctions or fails to operate correctly, it can lead to significant issues with the vehicle's braking performance, potentially compromising the driver's ability to stop the vehicle safely.

OBDII Code C0122 Subaru - Front Inlet Valve Right
C0122 Subaru Code - Front Inlet Valve Right

Common Causes of C0122 Subaru

  1. Faulty front inlet valve: The valve itself may be defective or damaged, causing it to malfunction and trigger the C0122 code.
  2. Contaminated brake fluid: Dirt or debris in the brake fluid can clog the front inlet valve, preventing it from operating correctly.
  3. Wiring issues: Electrical problems such as a short circuit or damaged wiring can disrupt communication with the front inlet valve, leading to a malfunction.
  4. Brake system leaks: Leaking brake fluid can affect the pressure within the braking system, potentially causing issues with the front inlet valve.

Symptoms of C0122 Subaru

  1. Uneven braking: The vehicle may pull to one side when braking, indicating a possible issue with the front inlet valve on the right side.
  2. Increased stopping distance: The vehicle may take longer to come to a complete stop, as the braking force is not evenly distributed between the front wheels.
  3. Brake pedal feels spongy: The brake pedal may feel soft or spongy when pressed, indicating potential issues with the braking system.
  4. ABS warning light: The vehicle's ABS warning light may illuminate on the dashboard, signaling a problem with the anti-lock braking system.

How to Fix C0122 Subaru

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the C0122 code and inspect the front inlet valve on the right side for any visible damage or signs of malfunction.
  2. Replace the front inlet valve: If the valve is found to be faulty, it will need to be replaced with a new one to restore proper braking functionality.
  3. Flush the brake system: Flush the brake system to remove any contaminants or debris that may be affecting the front inlet valve's operation.
  4. Test the brakes: After replacing the valve and flushing the system, test the brakes to ensure that they are functioning correctly and that the C0122 code has been resolved.

Cost to Fix C0122 Subaru

The cost of repairing a front inlet valve right issue on a Subaru vehicle can vary depending on the extent of the damage and the specific parts required for the repair. On average, the cost of replacing a front inlet valve can range from $200 to $500, including parts and labor. Additional costs may apply if there are other issues with the braking system that need to be addressed. It's essential to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model, as well as the extent of the repair needed. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and other factors.

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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 C0122 Subaru Code

1. What are the common symptoms of OBDII code C0122 in a Subaru related to the Front Inlet Valve Right?

The common symptoms include the ABS warning light being illuminated on the dashboard and potential issues with the vehicle's braking system.

2. What could cause the OBDII code C0122 in a Subaru indicating a problem with the Front Inlet Valve Right?

Possible causes of this code include a faulty front inlet valve, damaged wiring or connectors, or issues with the ABS control module.

3. How can I diagnose the OBDII code C0122 in my Subaru related to the Front Inlet Valve Right?

Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific error codes and conducting a thorough inspection of the front inlet valve, wiring, and connectors for any signs of damage or malfunction.

4. Is it safe to continue driving my Subaru with the OBDII code C0122 indicating an issue with the Front Inlet Valve Right?

It is not recommended to continue driving the vehicle with this code present, as it can affect the proper functioning of the ABS system and compromise overall braking performance.

5. Can I repair the OBDII code C0122 in my Subaru related to the Front Inlet Valve Right on my own?

Repairing this code may require advanced automotive knowledge and specialized tools. It is advisable to seek assistance from a professional mechanic or dealership to properly diagnose and fix the issue.

6. Are there any temporary solutions to consider for the OBDII code C0122 in a Subaru indicating a problem with the Front Inlet Valve Right?

Temporary solutions such as clearing the error code using an OBDII scanner may temporarily turn off the warning light, but it is crucial to address the underlying issue promptly to ensure the safety and performance of the vehicle.

7. How much does it typically cost to repair the OBDII code C0122 in a Subaru associated with the Front Inlet Valve Right?

The cost of repairing this code can vary depending on the specific cause of the issue, parts needed for replacement, and labor costs. It is recommended to obtain quotes from reputable repair shops for an accurate estimate.

8. Can the OBDII code C0122 in a Subaru be triggered by other underlying problems besides the Front Inlet Valve Right?

While the code is directly related to the Front Inlet Valve Right, it is essential to check for any additional issues within the ABS system that may contribute to the error code, such as sensor malfunctions or hydraulic problems.

9. How long does it take to repair the OBDII code C0122 in a Subaru linked to the Front Inlet Valve Right?

The repair time can vary depending on the complexity of the issue and availability of parts. It is recommended to consult with a professional mechanic to determine the exact timeline for resolving the problem.

10. Will fixing the OBDII code C0122 in my Subaru related to the Front Inlet Valve Right improve overall vehicle performance?

Addressing this error code promptly can help restore the proper functioning of the ABS system, ensuring optimal braking performance and overall safety while driving.

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