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Engine-Codes – Generic – U0133

U0133 Code - Lost Communication With Active Roll Control Module

Quick Answer

The U0133 diagnostic trouble code indicates that there has been a loss of communication with the Active Roll Control Module in the vehicle. Common causes include Damaged wiring or connectors leading to the Active Roll Control Module, Faulty Active Roll Control Module, Issues with other modules or sensors affecting communication. 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
U0133 indicates Lost Communication With Active Roll Control Module.
Common causes
Common causes include Damaged wiring or connectors leading to the Active Roll Control Module, Faulty Active Roll Control Module, Issues with other modules or sensors affecting communication.
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 08, 2024
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Code U0133 Description

The U0133 diagnostic trouble code indicates that there has been a loss of communication with the Active Roll Control Module in the vehicle. The Active Roll Control Module is a component of the vehicle's stability control system that helps to manage body roll during cornering and other maneuvers. When communication with this module is lost, it can have a significant impact on the vehicle's handling and stability.

OBDII Code U0133 - Lost Communication With Active Roll Control Module
U0133 Code - Lost Communication With Active Roll Control Module

Common Causes of U0133

  1. Damaged wiring or connectors leading to the Active Roll Control Module.
  2. Faulty Active Roll Control Module.
  3. Issues with other modules or sensors affecting communication.
  4. Corrosion or moisture in the electrical connections.
  5. Software glitches or programming errors.

Symptoms of U0133

  1. Stability control or traction control warning lights illuminated on the dashboard.
  2. Reduced handling and stability during cornering or sudden maneuvers.
  3. Vehicle entering limp mode, limiting performance.
  4. Loss of electronic stability control functionality.

How to Fix U0133

  1. Begin by conducting a visual inspection of the wiring and connectors leading to the Active Roll Control Module to check for any visible damage or corrosion. Repair or replace any damaged components.
  2. Use a diagnostic scanner to reset the code and attempt to establish communication with the Active Roll Control Module. If communication cannot be established, further diagnosis may be necessary.
  3. Test the Active Roll Control Module for functionality and replace if found to be faulty.
  4. Check and repair any other modules or sensors in the vehicle's network that may be affecting communication.
  5. Clear any stored codes, perform a test drive to ensure proper functionality, and recheck for any recurring issues.

Cost to Fix U0133

The typical repair costs for addressing the U0133 code can range from $200 to $500, depending on the specific cause of the communication loss and the need for replacement parts. This estimate includes the cost of diagnostic testing, potential wiring repairs, module replacements, and labor. However, it's essential to note that the actual costs can vary based on the vehicle make and model, location, and labor rates at the auto repair shop. It's advisable to consult with a professional mechanic for a more accurate cost estimate tailored to your specific situation.

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Code U0133 Information for Specific Makes

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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