AutoCodes – Cadillac – U2138 Cadillac

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

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Steering Column Lock Control Module (SCLCM), Steering Column Lock Control Module harness is open or shorted, Steering Column Lock Control Module circuit poor electrical connection. 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 Cadillac indicates Lost Communication With Steering Column Lock Control Module.
Common causes: Common causes include Faulty Steering Column Lock Control Module (SCLCM), Steering Column Lock Control Module harness is open or shorted, Steering Column Lock Control Module circuit poor electrical connection.
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 637

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 Jun 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2138 Cadillac Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2138 Cadillac - Lost Communication With Steering Column Lock Control Module - AutoCodes.com — U2138 Cadillac Code - Lost Communication With Steering Column Lock Control Module

What does this mean?

What are the Possible Causes of the DTC U2138 Cadillac?

Faulty Steering Column Lock Control Module (SCLCM)
Steering Column Lock Control Module harness is open or shorted
Steering Column Lock Control Module circuit poor electrical connection

How to Fix the DTC U2138 Cadillac?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U2138 Cadillac 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.

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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 U2138 Cadillac Code

1. What are the common symptoms of OBDII code U2138 in a Cadillac related to the Steering Column Lock Control Module?

- Common symptoms include difficulty starting the vehicle, the steering wheel locking in place, and potential issues with the vehicle's ignition system.

2. What can cause the OBDII code U2138 "Lost Communication With Steering Column Lock Control Module" in a Cadillac?

- The code U2138 in a Cadillac can be caused by a faulty Steering Column Lock Control Module, damaged wiring or connectors, or a communication error within the vehicle's network.

3. How can I diagnose the OBDII code U2138 in my Cadillac related to the Steering Column Lock Control Module?

- Diagnosing the U2138 code involves using a diagnostic scanner to retrieve the specific code, checking the connections to the Steering Column Lock Control Module, and inspecting the wiring for any signs of damage.

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

- It is not recommended to drive the vehicle with the U2138 code, as it may lead to potential steering column issues and safety concerns. It is best to address the problem promptly.

5. What are some repair tips for fixing the OBDII code U2138 in a Cadillac?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connection to the Steering Column Lock Control Module, and resetting the code after addressing the underlying issue.

6. Is the OBDII code U2138 related to the Steering Column Lock Control Module a common issue in Cadillacs?

- The U2138 code related to the Steering Column Lock Control Module can be seen in various Cadillac models, especially in vehicles equipped with advanced electronic systems.

7. How much does it typically cost to repair the OBDII code U2138 in a Cadillac?

- Repair costs for the U2138 code can vary depending on the specific issue causing the code, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can resetting the OBDII code U2138 in my Cadillac solve the issue temporarily?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the Steering Column Lock Control Module persists, the code is likely to return.

9. Are there any preventive measures to avoid the OBDII code U2138 in a Cadillac?

- Regular maintenance checks, ensuring proper electrical connections, and addressing any warning signs promptly can help prevent issues leading to the U2138 code in a Cadillac.

10. How urgent is it to address the OBDII code U2138 in a Cadillac?

- It is advisable to address the U2138 code promptly to prevent potential steering column malfunctions and ensure the safety and proper functioning of the vehicle.