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Engine-Codes – Generic – C0122

C0122 Code - Front Inlet Valve Right

Quick Answer

The C0122 diagnostic trouble code (DTC) refers to an issue with the front inlet valve on the right side of the vehicle. Common causes include Faulty front inlet valve solenoid, Corrosion or debris blocking the valve, Wiring or connection issues in the ABS system. 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 indicates Front Inlet Valve Right.
Common causes
Common causes include Faulty front inlet valve solenoid, Corrosion or debris blocking the valve, Wiring or connection issues in the ABS system.
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 Sep 10, 2024
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Code C0122 Description

The C0122 diagnostic trouble code (DTC) refers to an issue with the front inlet valve on the right side of the vehicle. This code typically indicates a problem with the anti-lock braking system (ABS) or traction control system. The front inlet valve is responsible for regulating the hydraulic pressure in the ABS system, which helps prevent wheel lock-up during sudden braking or slippery road conditions. When this valve malfunctions, it can lead to a loss of control over the vehicle's braking performance and stability.

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

Common Causes of C0122

  1. Faulty front inlet valve solenoid
  2. Corrosion or debris blocking the valve
  3. Wiring or connection issues in the ABS system
  4. ABS control module malfunction
  5. Hydraulic fluid leaks or low fluid levels in the ABS system

Symptoms of C0122

  1. Illuminated ABS or traction control warning light on the dashboard
  2. Increased stopping distance during braking
  3. Unusual noises coming from the ABS system during operation
  4. Loss of traction or stability control on slippery surfaces
  5. ABS system engaging unnecessarily or inconsistently

How to Fix C0122

  1. Begin by conducting a thorough diagnostic scan to confirm the C0122 code and identify the specific issue with the front inlet valve.
  2. Inspect the front inlet valve for any physical damage, corrosion, or blockages that may be impeding its operation.
  3. Test the front inlet valve solenoid and wiring for proper function and continuity.
  4. Replace the front inlet valve if it is determined to be faulty, ensuring proper installation and calibration.
  5. Clear the DTC from the vehicle's computer system and perform a road test to verify that the issue has been resolved.

Cost to Fix C0122

The cost of repairing a front inlet valve right issue can vary depending on the make and model of the vehicle, as well as the extent of the damage and the specific repair required. In general, replacing a front inlet valve can range from $200 to $500, including parts and labor. Additional costs may apply if other components in the ABS system need to be repaired or replaced. It is recommended to consult with a qualified mechanic or service center for an accurate estimate based on your vehicle's unique circumstances. Please note that diagnostic time and labor rates may vary, so it's advisable to inquire about these costs upfront.

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Code C0122 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 C0122 Code

1. What are some common symptoms of OBDII code C0122 (Front Inlet Valve Right)?

The common symptoms of OBDII code C0122 include ABS warning light illuminated on the dashboard, potential loss of ABS functionality, and possible issues with braking performance.

2. What are the likely causes of OBDII code C0122 (Front Inlet Valve Right)?

The likely causes of OBDII code C0122 include a faulty front inlet valve on the right side, damaged wiring or connectors in the ABS system, or issues with the ABS control module.

3. How can I diagnose OBDII code C0122 (Front Inlet Valve Right)?

Diagnosing OBDII code C0122 involves using an OBDII scanner to retrieve the code, visually inspecting the ABS components for any visible damage, and testing the front inlet valve's functionality using a multimeter.

4. Can I still drive my vehicle with OBDII code C0122 (Front Inlet Valve Right) present?

It is not recommended to drive your vehicle with OBDII code C0122 present, as it can affect the ABS system's performance and compromise your vehicle's braking safety.

5. How can I repair OBDII code C0122 (Front Inlet Valve Right)?

Repairing OBDII code C0122 may involve replacing the front inlet valve on the right side, repairing any damaged wiring or connectors, or reprogramming the ABS control module to clear the code.

6. Are there any DIY tips for fixing OBDII code C0122 (Front Inlet Valve Right)?

While some DIY enthusiasts may attempt to replace the front inlet valve themselves, it is recommended to seek professional help for diagnosing and repairing OBDII code C0122 to ensure proper resolution.

7. How much does it typically cost to repair OBDII code C0122 (Front Inlet Valve Right)?

The cost of repairing OBDII code C0122 can vary depending on the extent of the issue, the parts needed, and the labor costs. It is advisable to obtain quotes from automotive professionals for an accurate estimate.

8. Can OBDII code C0122 (Front Inlet Valve Right) be intermittent?

Yes, OBDII code C0122 can be intermittent, meaning it may come and go depending on the conditions that trigger the fault in the ABS system.

9. Will OBDII code C0122 (Front Inlet Valve Right) cause my vehicle to fail an emissions test?

OBDII code C0122 is related to the ABS system and typically does not affect emissions. However, it is still important to address the issue for proper vehicle safety and performance.

10. How long does it take to repair OBDII code C0122 (Front Inlet Valve Right)?

The repair time for OBDII code C0122 can vary depending on the complexity of the issue and the availability of parts. In general, it may take a few hours to a day to diagnose and repair the problem.

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