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U0122 Infiniti Code - Lost Communication With Vehicle Dynamics Control Module

Quick Answer

The U0122 code for Infiniti vehicles indicates that there is a communication problem between the vehicle's onboard computer system and the Vehicle Dynamics Control Module (VDCM). Common causes include Damaged or corroded wiring harness connecting the onboard computer system and the VDCM, Faulty VDCM unit that is not communicating properly with the vehicle's computer system, Issues with the CAN (Controller Area Network) communication network between components. 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
U0122 Infiniti indicates Lost Communication With Vehicle Dynamics Control Module .
Common causes
Common causes include Damaged or corroded wiring harness connecting the onboard computer system and the VDCM, Faulty VDCM unit that is not communicating properly with the vehicle's computer system, Issues with the CAN (Controller Area Network) communication network between components.
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 12, 2024
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Code U0122 Infiniti Description

The U0122 code for Infiniti vehicles indicates that there is a communication problem between the vehicle's onboard computer system and the Vehicle Dynamics Control Module (VDCM). The VDCM is responsible for monitoring and controlling various aspects of the vehicle's stability and traction control systems. When communication is lost with this module, it can lead to a range of issues that affect the vehicle's performance and safety.

OBDII Code U0122 Infiniti - Lost Communication With Vehicle Dynamics Control Module
U0122 Infiniti Code - Lost Communication With Vehicle Dynamics Control Module

Common Causes of U0122 Infiniti

  1. Damaged or corroded wiring harness connecting the onboard computer system and the VDCM.
  2. Faulty VDCM unit that is not communicating properly with the vehicle's computer system.
  3. Issues with the CAN (Controller Area Network) communication network between components.
  4. Software glitches or malfunctions in the vehicle's computer system.
  5. Water intrusion or physical damage to the VDCM unit or its connectors.

Symptoms of U0122 Infiniti

  1. Illuminated traction control or stability control warning lights on the dashboard.
  2. Reduced traction control effectiveness, especially during slippery road conditions.
  3. Erratic or unpredictable handling when driving at higher speeds or making sharp turns.
  4. Loss of stability control assistance, leading to potential skidding or loss of control in emergency situations.
  5. Difficulty engaging or disengaging the vehicle's traction control system.

How to Fix U0122 Infiniti

  1. Begin by conducting a thorough inspection of the wiring harness and connectors for any signs of damage or corrosion. Repair or replace any damaged components.
  2. Check the VDCM unit for any visible damage or signs of water intrusion. If necessary, replace the VDCM unit with a new one.
  3. Use a diagnostic scanner to reset the trouble code and re-establish communication between the onboard computer system and the VDCM.
  4. Test drive the vehicle to ensure that the stability and traction control systems are functioning properly after the repair.
  5. Clear any remaining trouble codes and perform a final inspection to verify that the issue has been successfully resolved.

Cost to Fix U0122 Infiniti

The cost of repairing the U0122 code on an Infiniti vehicle can vary depending on the specific cause of the issue and the cost of parts and labor in your area. In general, you can expect to pay anywhere from $200 to $500 for parts and labor to address this problem. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a few quotes from different shops to find the best price. Additionally, rates at dealerships or in metropolitan areas may be higher, while independent shops often offer more competitive pricing.

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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 U0122 Infiniti Code

1. What does the OBDII code U0122 for Infiniti mean?

The code U0122 indicates that there is a communication problem between the vehicle's system and the Vehicle Dynamics Control Module.

2. What are the common symptoms of the U0122 code in an Infiniti?

Common symptoms of the U0122 code include the ABS warning light, traction control light, or stability control light appearing on the dashboard. Additionally, the vehicle may experience issues with traction control and stability control systems.

3. What are the potential causes of the U0122 code in an Infiniti?

The U0122 code in an Infiniti can be triggered by issues such as a faulty Vehicle Dynamics Control Module, damaged wiring or connectors, a blown fuse, or software glitches within the vehicle's system.

4. How can I diagnose the U0122 code in my Infiniti?

Diagnosing the U0122 code typically involves using a professional OBDII scanner to retrieve the specific error codes. Additionally, a thorough inspection of the wiring, connectors, and fuses related to the Vehicle Dynamics Control Module is necessary.

5. Can I still drive my Infiniti with the U0122 code present?

While it may be possible to drive your vehicle with the U0122 code, it is not recommended as the traction control and stability control systems may not function properly. It's best to address the issue promptly.

6. How can I repair the U0122 code in my Infiniti?

Repairing the U0122 code may involve replacing the faulty Vehicle Dynamics Control Module, repairing damaged wiring or connectors, replacing blown fuses, or updating the vehicle's software to resolve any glitches.

7. Is it safe to ignore the U0122 code in my Infiniti?

Ignoring the U0122 code can lead to potential safety hazards as the traction control and stability control systems may not operate as intended. It is advisable to address the issue promptly to ensure the vehicle's optimal performance and safety.

8. Can a DIY enthusiast fix the U0122 code in an Infiniti?

While some aspects of diagnosing and repairing the U0122 code may be DIY-friendly, it is recommended to consult a professional mechanic or dealership for accurate diagnosis and proper repair to ensure the issue is resolved effectively.

9. How much does it cost to fix the U0122 code in an Infiniti?

The cost of fixing the U0122 code can vary depending on the root cause of the issue, parts needed for repair, and labor costs. It is advisable to obtain quotes from reputable mechanics or dealerships for an accurate estimate.

10. Will resetting the OBDII code U0122 in my Infiniti make it disappear permanently?

Resetting the U0122 code may temporarily clear the error code, but if the underlying issue is not addressed, the code is likely to reappear. It is essential to diagnose and repair the root cause of the problem to prevent the code from reoccurring.

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