AutoCodes – Toyota – U0126 2013 Toyota RAV4

U0126 2013 Toyota RAV4 Code - Lost Communication with Steering Angle Sensor Module

Quick Answer

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Steering Angle Sensor Module, Steering Angle Sensor Module harness is open or shorted. 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 2013 Toyota RAV4 indicates Lost Communication with Steering Angle Sensor Module.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Steering Angle Sensor Module, Steering Angle Sensor Module harness is open or shorted.
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 647

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 26, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U0126 2013 Toyota RAV4 Description

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. The exchange of operating information and commands among devices is facilitated by pre-programmed information about the required message exchange on the serial data circuits. Communication is carried out using two dedicated wires, known as CAN high and CAN low, with both lines carrying 2.5V when the CAN bus is in idle mode. During the transmission of data bits, the CAN high line increases to 3.75V while the CAN low drops to 1.25V, creating 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 Steering Angle Sensor Module has not been received.

OBDII Code U0126 2013 Toyota RAV4 - Lost Communication with Steering Angle Sensor Module - AutoCodes.com — U0126 2013 Toyota RAV4 Code - Lost Communication with Steering Angle Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0126 2013 Toyota RAV4?

Faulty Controller Area Network (CAN) Communication System
Faulty Steering Angle Sensor Module
Steering Angle Sensor Module harness is open or shorted
Steering Angle Sensor Module circuit poor electrical connection

How to Fix the DTC U0126 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 U0126 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 U0126 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 U0126 2013 Toyota RAV4 Code

1. What does the OBDII code U0126 mean on a 2013 Toyota RAV4?

The U0126 code indicates a "Lost Communication with Steering Angle Sensor Module," meaning the vehicle's systems cannot communicate with the steering angle sensor.

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

Symptoms include the ABS or traction control light being illuminated, loss of power steering assist, issues with stability control, and erratic steering behavior.

3. What causes the U0126 code to appear?

Common causes include a faulty steering angle sensor, damaged or corroded wiring, a bad connection in the CAN (Controller Area Network) bus, or a malfunctioning ABS module.

4. Can I drive my 2013 Toyota RAV4 with the U0126 code?

While the car may still be drivable, the loss of stability control, ABS, or power steering assist could compromise safety, so itâ€™s best to address the issue promptly.

5. How do I diagnose the U0126 code on my Toyota RAV4?

Start by checking the wiring and connectors for damage or corrosion, then use an OBDII scanner to verify the code, and test the steering angle sensor for proper functionality.

6. How can I fix the U0126 code on a 2013 Toyota RAV4?

Repairs may involve replacing the faulty steering angle sensor, repairing or replacing damaged wiring, clearing corrosion, or addressing issues with the ABS module.

7. What tools are needed to troubleshoot the U0126 code?

A diagnostic scanner with CAN bus capabilities, a multimeter for checking electrical connections, and service manuals for wiring diagrams are typically required.

8. How much does it cost to repair the U0126 code on a Toyota RAV4?

Repair costs vary depending on the issue but can range from $100 to $500 for diagnostics and sensor replacement, with wiring or ABS module repairs potentially costing more.

9. Can a low battery cause the U0126 code?

Yes, a low or failing battery can disrupt communication between modules and trigger the U0126 code, so checking battery health is recommended.

10. Does the U0126 code require reprogramming after repairs?

In some cases, after replacing the steering angle sensor or related components, recalibration or programming with a diagnostic tool may be necessary to clear the code and restore functionality.