AutoCodes – Infiniti – U0122 Infiniti

U0122 Infiniti Code - Lost Communication With Vehicle Dynamics Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Vehicle Dynamics Control Module, Vehicle Dynamics Control Module harness is open or shorted, Vehicle Dynamics Control Module 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: U0122 Infiniti indicates Lost Communication With Vehicle Dynamics Control Module .
Common causes: Common causes include Faulty Vehicle Dynamics Control Module, Vehicle Dynamics Control Module harness is open or shorted, Vehicle Dynamics Control Module 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 2,065

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 Apr 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0122 Infiniti Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Vehicle Dynamics Control Module has not been received.

OBDII Code U0122 Infiniti - Lost Communication With Vehicle Dynamics Control Module - AutoCodes.com — U0122 Infiniti Code - Lost Communication With Vehicle Dynamics Control Module

What does this mean?

What are the Possible Causes of the DTC U0122 Infiniti?

Faulty Vehicle Dynamics Control Module
Vehicle Dynamics Control Module harness is open or shorted
Vehicle Dynamics Control Module circuit poor electrical connection

How to Fix the DTC U0122 Infiniti?

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 U0122 Infiniti 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.

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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.