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Engine-Codes – Generic – U0126

U0126 Code - Lost Communication with Steering Angle Sensor Module

Quick Answer

The U0126 diagnostic trouble code indicates that the vehicle's engine control module (ECM) has detected a loss of communication with the steering angle sensor module. Common causes include Faulty steering angle sensor module, Wiring or connector issues, ECM software glitch. 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 indicates Lost Communication with Steering Angle Sensor Module.
Common causes
Common causes include Faulty steering angle sensor module, Wiring or connector issues, ECM software glitch.
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 05, 2024
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Code U0126 Description

The U0126 diagnostic trouble code indicates that the vehicle's engine control module (ECM) has detected a loss of communication with the steering angle sensor module. The steering angle sensor is responsible for providing information to various vehicle systems, including the stability control system, traction control system, and the anti-lock braking system. When communication with the steering angle sensor module is lost, it can lead to impaired performance of these systems and potentially compromise the vehicle's overall safety.

OBDII Code U0126 - Lost Communication with Steering Angle Sensor Module
U0126 Code - Lost Communication with Steering Angle Sensor Module

Common Causes of U0126

  1. Faulty steering angle sensor module
  2. Wiring or connector issues
  3. ECM software glitch
  4. Electrical interference
  5. Vehicle impact or collision

Symptoms of U0126

  1. ABS warning light illuminated on the dashboard
  2. Traction control system malfunction
  3. Stability control system failure
  4. Erratic steering behavior
  5. Loss of power steering assistance

How to Fix U0126

  1. Perform a diagnostic scan to confirm the U0126 code and pinpoint the exact cause of the communication loss.
  2. Inspect wiring harnesses and connectors for any damage or corrosion and repair or replace as needed.
  3. Check the steering angle sensor module for proper functionality and replace if necessary.
  4. Clear the trouble codes from the ECM memory and reset any affected systems.
  5. Test drive the vehicle to verify that the issue has been resolved and that communication with the steering angle sensor module has been restored.

Cost to Fix U0126

The typical repair costs for addressing a U0126 code can vary depending on the specific cause of the communication loss. In general, replacing a faulty steering angle sensor module can cost between $200 and $500, while addressing wiring or connector issues may range from $100 to $300. Labor costs can add an additional $100 to $300 to the total repair bill. It's important to consult with a professional mechanic to get an accurate estimate based on the vehicle's make and model, as well as the extent of the repairs required.

What does this mean?

Tech Notes for U0126

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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Code U0126 Information for Specific Makes

  • U0126 Buick — Lost Communication With Steering Wheel Angle Sensor Module
  • U0126 Cadillac — Lost Communication With Steering Wheel Angle Sensor Module
  • U0126 Chevrolet — Lost Communication With Steering Wheel Angle Sensor Module
  • U0126 Chrysler — Lost Communication With Steering Angle Sensor Module
  • U0126 Dodge — Lost Communication With Steering Angle Sensor Module
  • U0126 Ford — Lost Communication With Steering Angle Sensor Module
  • U0126 GMC — Lost Communication With Steering Wheel Angle Sensor Module
  • U0126 Infiniti — Lost Communication With Steering Angle Sensor Module
  • U0126 Jeep — Lost Communication With Steering Angle Sensor Module
  • U0126 Lexus — Lost Communication with Steering Angle Sensor Module
  • U0126 Lincoln — Lost Communication With Steering Angle Sensor Module
  • U0126 Mercury — Lost Communication With Steering Angle Sensor Module
  • U0126 Nissan — Lost Communication With Steering Angle Sensor Module
  • U0126 RAM — Lost Communication With Steering Angle Sensor Module
  • U0126 Toyota — Lost Communication with Steering Angle Sensor Module
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.

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