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Engine-Codes – Generic – U2138

U2138 Code - Lost Communication With Steering Column Lock Control Module

Quick Answer

The U2138 diagnostic trouble code (DTC) indicates that there is a communication issue with the steering column lock control module in the vehicle. Common causes include Wiring faults or shorts in the communication circuit, Faulty steering column lock control module, Blown fuse related to the steering column lock system. 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
U2138 indicates Lost Communication With Steering Column Lock Control Module.
Common causes
Common causes include Wiring faults or shorts in the communication circuit, Faulty steering column lock control module, Blown fuse related to the steering column lock system.
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 11, 2024
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Code U2138 Description

The U2138 diagnostic trouble code (DTC) indicates that there is a communication issue with the steering column lock control module in the vehicle. This module is responsible for controlling the steering column lock, which is a security feature that prevents the steering wheel from being turned without the proper key. When communication with this module is lost, it can result in the steering column lock not functioning properly, potentially leading to issues with starting the vehicle or difficulty in turning the steering wheel.

OBDII Code U2138 - Lost Communication With Steering Column Lock Control Module
U2138 Code - Lost Communication With Steering Column Lock Control Module

Common Causes of U2138

  1. Wiring faults or shorts in the communication circuit
  2. Faulty steering column lock control module
  3. Blown fuse related to the steering column lock system
  4. Issues with the vehicle's electronic control unit (ECU)
  5. Software glitches or programming errors in the control module

Symptoms of U2138

  1. Steering wheel lock not engaging properly
  2. Difficulty starting the vehicle
  3. Steering wheel becomes locked in place
  4. Warning light on the dashboard related to steering column lock control module

How to Fix U2138

  1. Perform a visual inspection of the wiring harness and connectors for any signs of damage or corrosion. Repair or replace any damaged wiring.
  2. Check and replace any blown fuses related to the steering column lock system.
  3. Diagnose the steering column lock control module for faults using a diagnostic scanner. Replace the module if necessary.
  4. Reset the steering column lock system and perform a relearn procedure to ensure proper communication between the control module and the ECU.
  5. Clear the DTC from the vehicle's memory using the diagnostic scanner after the repair is completed.

Cost to Fix U2138

The cost of repairing a lost communication issue with the steering column lock control module can vary depending on the specific cause of the problem and the labor rates in your area. On average, the parts for this repair can range from $200 to $500, with labor costs adding an additional $100 to $300. Overall, the total repair cost for this issue can range from $300 to $800. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your vehicle make and model.

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Code U2138 Information for Specific Makes

  • U2138 Buick — Lost Communication With Steering Column Lock Control Module
  • U2138 Cadillac — Lost Communication With Steering Column Lock Control Module
  • U2138 Chevrolet — Lost Communication With Steering Column Lock Control Module
  • U2138 GMC — Lost Communication With Steering Column Lock Control 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.

Frequently Asked Questions about U2138 Code

1. What are the common symptoms of OBDII code U2138 - Lost Communication With Steering Column Lock Control Module?

- Common symptoms include difficulty starting the vehicle, steering wheel lock malfunctions, and warning lights on the dashboard.

2. What can cause the OBDII code U2138 to trigger?

- The code U2138 can be triggered by a faulty steering column lock control module, damaged wiring, loose connections, or a communication breakdown between modules.

3. How can I diagnose the cause of OBDII code U2138?

- Diagnosing the cause of U2138 involves checking the connections and wiring related to the steering column lock control module, using an OBDII scanner to retrieve specific error codes, and performing a thorough visual inspection.

4. Can I still drive my vehicle with OBDII code U2138 present?

- It is not recommended to drive your vehicle with the U2138 code present, as it can lead to potential safety hazards due to steering column malfunctions.

5. How can I repair OBDII code U2138?

- Repairing U2138 may involve replacing the steering column lock control module, repairing damaged wiring or connections, and ensuring proper communication between modules.

6. Is it possible to reset OBDII code U2138 without repairs?

- Resetting the code without addressing the underlying issue is not recommended, as the problem will likely persist and can affect the safety and performance of the vehicle.

7. Are there any DIY tips for troubleshooting OBDII code U2138?

- DIY tips include checking the fuses related to the steering column lock control module, inspecting the wiring for any visible damage, and ensuring all connections are secure.

8. How much does it typically cost to repair OBDII code U2138?

- The cost of repairing U2138 can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a mechanic help me fix OBDII code U2138, or do I need to visit a dealership?

- A qualified mechanic can help diagnose and repair U2138, but if specialized software or parts are required, a dealership may be the best option for resolving the issue.

10. Is OBDII code U2138 a common issue in certain vehicle models?

- U2138 can be a common issue in vehicles equipped with steering column lock control modules, particularly in models with electronic steering systems.

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