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U0126 2017 Toyota RAV4 Code - Lost Communication with Steering Angle Sensor Module

Quick Answer

The U0126 diagnostic trouble code (DTC) for a 2017 Toyota RAV4 indicates that there is a communication issue with the Steering Angle Sensor Module. Common causes include Faulty wiring or connectors leading to the Steering Angle Sensor Module, Corrosion or damage to the sensor itself, Issues with the CAN communication network. 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
U0126 2017 Toyota RAV4 indicates Lost Communication with Steering Angle Sensor Module.
Common causes
Common causes include Faulty wiring or connectors leading to the Steering Angle Sensor Module, Corrosion or damage to the sensor itself, Issues with the CAN communication network.
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 14, 2024
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Code U0126 2017 Toyota RAV4 Description

The U0126 diagnostic trouble code (DTC) for a 2017 Toyota RAV4 indicates that there is a communication issue with the Steering Angle Sensor Module. This module is responsible for providing crucial data to the vehicle's electronic stability control system, which helps to ensure the vehicle maintains stability and traction during driving. When communication with this module is lost, it can lead to potential safety hazards and affect the overall performance of the vehicle.

OBDII Code U0126 2017 Toyota RAV4 - Lost Communication with Steering Angle Sensor Module
U0126 2017 Toyota RAV4 Code - Lost Communication with Steering Angle Sensor Module

Common Causes of U0126 2017 Toyota RAV4

  1. Faulty wiring or connectors leading to the Steering Angle Sensor Module.
  2. Corrosion or damage to the sensor itself.
  3. Issues with the CAN communication network.
  4. Software glitches or malfunctions within the ECU.
  5. Physical damage to the Steering Angle Sensor Module due to impact or water intrusion.

Symptoms of U0126 2017 Toyota RAV4

  1. Illuminated ABS or traction control warning lights on the dashboard.
  2. Loss of electronic stability control functionality.
  3. Steering wheel may feel less responsive or loose.
  4. Unusual noises coming from the steering system.
  5. Vehicle may pull to one side while driving.

How to Fix U0126 2017 Toyota RAV4

  1. Begin by conducting a thorough visual inspection of the wiring and connectors leading to the Steering Angle Sensor Module. Repair or replace any damaged components.
  2. Check the sensor itself for any signs of corrosion or physical damage. Replace the sensor if necessary.
  3. Use a diagnostic scan tool to reset the fault code and attempt to reestablish communication between the module and the ECU.
  4. If communication is still not restored, further diagnostics may be required to pinpoint the exact cause of the issue, potentially involving more in-depth testing of the CAN network or ECU.
  5. Once the root cause of the communication loss is identified, perform the necessary repairs or replacements to resolve the issue.

Cost to Fix U0126 2017 Toyota RAV4

The cost of repairing a U0126 code on a 2017 Toyota RAV4 can vary depending on the specific cause of the issue. In general, the cost of parts for this repair can range from $100 to $500, with labor costs adding an additional $100 to $300. Overall, the total repair cost could fall between $200 and $800. It's important to note that these are rough estimates, and actual costs may vary based on the location of the repair, the rates charged by the auto repair shop, and any additional diagnostic or repair work that may be required. It's recommended to consult with a qualified mechanic or repair shop to get a more accurate cost estimate for addressing this issue.

What does this mean?

Tech Notes for U0126 2017 Toyota RAV4

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.

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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 U0126 2017 Toyota RAV4 Code

1. What does the OBDII code U0126 mean on a 2017 Toyota RAV4?

U0126 indicates a loss of communication between the vehicle's control modules and the Steering Angle Sensor (SAS).

2. What are common symptoms of the U0126 code in a 2017 Toyota RAV4?

Symptoms may include the ABS or traction control light turning on, loss of stability control functionality, or erratic steering behavior.

3. What causes the U0126 code to appear on a Toyota RAV4?

Common causes include a faulty Steering Angle Sensor, damaged wiring or connectors, a malfunctioning CAN bus network, or a failing control module.

4. How is the Steering Angle Sensor related to the U0126 code?

The Steering Angle Sensor monitors the steering wheel position and communicates with various systems; if communication is lost, the U0126 code is triggered.

5. Can I drive my 2017 Toyota RAV4 with the U0126 code?

While the car may still be drivable, safety features like stability control and ABS may not function properly, so it is recommended to address the issue promptly.

6. How do you diagnose the U0126 code on a Toyota RAV4?

A technician will use a scan tool to check for communication with the Steering Angle Sensor, inspect wiring and connectors, and test the CAN bus network.

7. Can a dead battery cause the U0126 code on a 2017 Toyota RAV4?

Yes, a dead or weak battery can disrupt communication between control modules, potentially triggering the U0126 code.

8. How do you fix the U0126 code in a Toyota RAV4?

Repairs may include replacing the Steering Angle Sensor, repairing damaged wiring or connectors, or addressing issues with the CAN bus network.

9. How much does it cost to fix the U0126 code on a 2017 Toyota RAV4?

Costs can vary, but repairs typically range from $100 for minor wiring repairs to over $500 if the Steering Angle Sensor needs replacement.

10. Can the U0126 code clear itself on a 2017 Toyota RAV4?

In rare cases, the code may clear if the issue is intermittent, but it usually requires repairs and a scan tool to reset the system.

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