AutoCodes – Toyota – U0122 2013 Toyota RAV4

U0122 2013 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 2013 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 281

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 2013 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 2013 Toyota RAV4 - Lost Communication with Vehicle Dynamics Control Module - AutoCodes.com — U0122 2013 Toyota RAV4 Code - Lost Communication with Vehicle Dynamics Control Module

What does this mean?

What are the Possible Causes of the DTC U0122 2013 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 2013 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 2013 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 2013 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 2013 Toyota RAV4 Code

1. What does the OBDII code U0122 on a 2013 Toyota RAV4 mean?

The code U0122 indicates a communication problem between the vehicle's engine control module (ECM) and the Vehicle Dynamics Control Module.

2. What are the common symptoms of U0122 on a 2013 Toyota RAV4?

Common symptoms of U0122 include the traction control and stability control lights coming on, loss of traction control functionality, and potential drivability issues.

3. What are the possible causes of U0122 on a 2013 Toyota RAV4?

Possible causes of U0122 include damaged wiring or connectors, a faulty Vehicle Dynamics Control Module, a malfunctioning ECM, or a communication bus error.

4. How can I diagnose the U0122 code on my 2013 Toyota RAV4?

Diagnosing the U0122 code may require using a professional OBDII scanner to retrieve the code and checking the communication between the ECM and Vehicle Dynamics Control Module.

5. How can I repair the U0122 code on my 2013 Toyota RAV4?

Repairing the U0122 code may involve inspecting and repairing any damaged wiring or connectors, replacing the Vehicle Dynamics Control Module if necessary, or reprogramming the ECM.

6. Can I still drive my 2013 Toyota RAV4 with the U0122 code present?

It is not recommended to drive your vehicle with the U0122 code present, as it may affect the vehicle's stability control system and overall drivability.

7. How much does it cost to fix the U0122 code on a 2013 Toyota RAV4?

The cost of fixing the U0122 code can vary depending on the specific issue causing the communication error. Repair costs may include parts and labor charges.

8. Will disconnecting the battery reset the U0122 code on my 2013 Toyota RAV4?

Disconnecting the battery may temporarily clear the code, but it is not a permanent solution. It is important to diagnose and repair the underlying issue to prevent the code from returning.

9. Is the U0122 code a common issue in 2013 Toyota RAV4 vehicles?

While the U0122 code is not extremely common in 2013 Toyota RAV4 vehicles, it can still occur due to various factors such as wiring issues or module failures.

10. Can I fix the U0122 code on my 2013 Toyota RAV4 myself, or do I need a professional mechanic?

Depending on your automotive repair skills and access to tools, you may be able to address the U0122 code yourself by checking wiring connections or replacing modules. However, complex diagnostics and repairs may require a professional mechanic's expertise.