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Engine-Codes – GMC – U2143 GMC

U2143 GMC Code - Lost Communications With Steering Angle Sensor

Quick Answer

The U2143 GMC code indicates that there has been a loss of communication with the steering angle sensor in the vehicle. Common causes include Loose or damaged wiring connections to the steering angle sensor, Faulty steering angle sensor, Malfunctioning control module. 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
U2143 GMC indicates Lost Communications With Steering Angle Sensor.
Common causes
Common causes include Loose or damaged wiring connections to the steering angle sensor, Faulty steering angle sensor, Malfunctioning control module.
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 07, 2024
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Code U2143 GMC Description

The U2143 GMC code indicates that there has been a loss of communication with the steering angle sensor in the vehicle. The steering angle sensor is a crucial component that helps the car's stability control system determine the correct steering angle and adjust accordingly. When communication with this sensor is lost, it can lead to issues with the vehicle's stability control system, potentially affecting the car's handling and overall performance.

OBDII Code U2143 GMC - Lost Communications With Steering Angle Sensor
U2143 GMC Code - Lost Communications With Steering Angle Sensor

Common Causes of U2143 GMC

  1. Loose or damaged wiring connections to the steering angle sensor
  2. Faulty steering angle sensor
  3. Malfunctioning control module
  4. Corrosion or moisture in the sensor or control module
  5. Electrical issues within the vehicle's system

Symptoms of U2143 GMC

  1. Dashboard warning light for stability control system illuminates
  2. Erratic steering behavior or difficulty steering
  3. Traction control system may not function properly
  4. Vehicle may pull to one side while driving

How to Fix U2143 GMC

  1. Diagnose the specific cause of the communication loss with a diagnostic scan tool.
  2. Inspect wiring and connections to the steering angle sensor for any damage or corrosion.
  3. Test the steering angle sensor and control module for proper functionality.
  4. Replace any faulty components, such as the sensor or control module, if necessary.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix U2143 GMC

The typical repair costs for addressing a lost communication with the steering angle sensor can range from $200 to $500, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary depending on factors such as the location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops may charge less. It is recommended to inquire about local rates for a more accurate estimate.

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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 U2143 GMC Code

1. What are the common symptoms of OBDII code U2143 GMC (Lost Communications With Steering Angle Sensor)?

- Common symptoms include the ABS warning light or traction control light illuminating on the dashboard, erratic steering behavior, and potential loss of stability control features.

2. What are some possible causes of OBDII code U2143 GMC?

- Possible causes include a faulty steering angle sensor, damaged wiring or connectors in the steering angle sensor circuit, a malfunctioning ABS module, or a software issue in the vehicle's control module.

3. How can I diagnose the issue related to OBDII code U2143 GMC?

- Diagnosis typically involves scanning the vehicle with an OBDII scanner to retrieve the specific code, inspecting the steering angle sensor and related wiring for damage, and testing the communication between the sensor and the control modules using a diagnostic tool.

4. Can I continue driving my vehicle with OBDII code U2143 GMC present?

- It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the stability control system and potentially compromise safety on the road.

5. How can I repair OBDII code U2143 GMC?

- Repair options may include replacing the faulty steering angle sensor, repairing damaged wiring or connectors, reprogramming the control modules, or addressing any underlying issues identified during diagnosis.

6. Is it safe to reset the code and clear the error without addressing the underlying issue?

- Clearing the code without addressing the underlying issue may temporarily turn off the warning lights, but the problem will likely reoccur, and the safety systems affected by the code will remain compromised.

7. Can a DIY enthusiast fix OBDII code U2143 GMC at home?

- While some basic checks like inspecting wiring connections can be done at home, diagnosing and repairing the root cause of the code may require specialized tools and expertise, so it's advisable to consult a professional mechanic.

8. How much does it cost to repair OBDII code U2143 GMC at a dealership or repair shop?

- The cost of repair can vary depending on the specific cause of the code and the labor rates of the dealership or repair shop, but it's recommended to obtain a detailed estimate before proceeding with the repairs.

9. Are there any recalls or technical service bulletins related to OBDII code U2143 GMC?

- It's advisable to check with the vehicle manufacturer or authorized service centers for any recalls or technical service bulletins related to this specific OBDII code, as there may be relevant information or remedies available.

10. How can I prevent OBDII code U2143 GMC from occurring in the future?

- Regular maintenance, including checking and cleaning sensor connections, inspecting wiring for damage, and addressing any warning lights promptly, can help prevent issues leading to the U2143 code.

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