AutoCodes – Toyota – U0122 2016 Toyota RAV4

U0122 2016 Toyota RAV4 Code - Lost Communication with Vehicle Dynamics Control Module

Quick Answer

The Engine Control Module (ECM) and Driving Support ECU Assembly to communicate signals with each sensor and ECU via Controller Area Network (CAN) communication. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 2016 Toyota RAV4 indicates Lost Communication with Vehicle Dynamics Control Module.
Common causes: Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 239

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 Mar 22, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U0122 2016 Toyota RAV4 Description

The Engine Control Module (ECM) and Driving Support ECU Assembly to communicate signals with each sensor and ECU via Controller Area Network (CAN) communication. If there are any malfunctions in the communication circuit, one or more CAN communication system Diagnostic Trouble Codes (DTC) are output.

OBDII Code U0122 2016 Toyota RAV4 - Lost Communication with Vehicle Dynamics Control Module - AutoCodes.com — U0122 2016 Toyota RAV4 Code - Lost Communication with Vehicle Dynamics Control Module

What does this mean?

What are the Possible Causes of the DTC U0122 2016 Toyota RAV4?

Faulty Skid Control ECU (Brake Actuator Assembly)
Skid Control ECU harness is open or shorted
Skid Control ECU circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC U0122 2016 Toyota RAV4?

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 does this mean?

Code Tech Notes

When there are problems with the way different systems in a vehicle communicate with each other using a technology called Controller Area Network (CAN) communication, Diagnostic Trouble Codes (DTC) are displayed. These codes can be caused by issues with the main bus or branch of the communication network, or with the Electronic Control Units (ECUs) and sensors that make up the different systems. If you see code for both the CAN communication problems and internal or power source problems at the same time, you should focus on fixing the internal or power source problems first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0122 2016 Toyota RAV4 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.

Need more information about the U0122 2016 Toyota RAV4 code?

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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 2016 Toyota RAV4 Code

1. What does the OBDII code U0122 on a 2016 Toyota RAV4 mean?

The code U0122 indicates a "Lost Communication with Vehicle Dynamics Control Module" error.

2. What are the common symptoms of U0122 in a 2016 Toyota RAV4?

Common symptoms of U0122 may include the traction control system light or ABS warning light illuminating on the dashboard.

3. What are the potential causes of the U0122 code in a 2016 Toyota RAV4?

The U0122 code can be triggered by issues such as a faulty Vehicle Dynamics Control (VDC) module, damaged wiring or connectors, or a communication network problem.

4. How can I diagnose the U0122 code on my 2016 Toyota RAV4?

Diagnosing the U0122 code typically involves using a diagnostic scanner to retrieve the code, checking for other related trouble codes, inspecting the VDC module and its connections, and testing the communication network.

5. Can I continue driving my 2016 Toyota RAV4 with the U0122 code?

It is not recommended to drive the vehicle with the U0122 code present, as it may affect the proper functioning of the vehicle's stability control system.

6. How can I repair the U0122 code on my 2016 Toyota RAV4?

Repairing the U0122 code may involve repairing or replacing the Vehicle Dynamics Control module, repairing damaged wiring or connectors, or addressing any communication network issues.

7. Can a DIY enthusiast fix the U0122 code in a 2016 Toyota RAV4?

While diagnosing the U0122 code may be possible for DIY enthusiasts with the right tools, repairing the underlying cause may require professional expertise due to the complexity of the vehicle's electronic systems.

8. Is resetting the trouble codes enough to fix the U0122 code on a 2016 Toyota RAV4?

Simply resetting the trouble codes may temporarily clear the U0122 code, but it is crucial to diagnose and address the root cause to prevent the code from reoccurring.

9. How much does it cost to repair the U0122 code on a 2016 Toyota RAV4?

The cost of repairing the U0122 code can vary depending on the underlying issue, the need for parts replacement, and labor costs. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

10. What steps can I take to prevent the U0122 code from appearing in my 2016 Toyota RAV4?

To prevent the U0122 code, it's essential to perform regular maintenance checks, address any warning lights promptly, and ensure proper care of the vehicle's electronic systems.