AutoCodes – Generic – U2139

U2139 Code - Lost Communication With Column Integration Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Column Integration Module, Column Integration Module harness is open or shorted, Column Integration 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: U2139 indicates Lost Communication With Column Integration Module.
Common causes: Common causes include Faulty Column Integration Module, Column Integration Module harness is open or shorted, Column Integration 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 5,591

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 U2139 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 U2139 - Lost Communication With Column Integration Module - AutoCodes.com — U2139 Code - Lost Communication With Column Integration Module

What does this mean?

What are the Possible Causes of the DTC U2139?

Faulty Column Integration Module
Column Integration Module harness is open or shorted
Column Integration Module circuit poor electrical connection

How to Fix the DTC U2139?

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 U2139 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.

Need more information about the U2139 code?

Need more information on how to fix the U2139 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U2139 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U2139 Buick — Lost Communication With Column Integration Module
U2139 Cadillac — Lost Communication With Column Integration Module
U2139 Chevrolet — Lost Communication With Column Integration Module
U2139 GMC — Lost Communication With Column Integration Module
U2139 Pontiac — Lost Communication With Column Integration Module
U2139 Saturn — Lost Communication With Column Integration 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 U2139 Code

1. What are the common symptoms of OBDII code U2139 (Lost Communication With Column Integration Module)?

- Common symptoms include issues with power steering, steering wheel controls not working, and possible warning lights on the dashboard.

2. What are the possible causes of OBDII code U2139?

- Possible causes include a faulty column integration module, damaged wiring or connectors, issues with the steering angle sensor, or a communication error within the vehicle's network.

3. How can I diagnose the root cause of OBDII code U2139?

- Diagnosing the issue typically involves checking the wiring and connectors associated with the column integration module, testing the module itself, and using a diagnostic scanner to analyze communication errors in the vehicle's system.

4. Is it safe to continue driving with OBDII code U2139 present?

- It is not recommended to continue driving with this code present, as it can affect the proper functioning of critical systems like power steering and potentially lead to safety hazards.

5. How can I repair OBDII code U2139?

- Repairing this code often involves fixing or replacing the faulty column integration module, repairing damaged wiring or connectors, and ensuring proper communication between the module and other vehicle components.

6. Can a DIY enthusiast fix OBDII code U2139 at home?

- While some aspects of diagnosing and repairing this code can be done at home, it is recommended to seek professional help for a thorough diagnosis and proper repair to ensure the issue is resolved correctly.

7. How much does it typically cost to repair OBDII code U2139 at a mechanic or dealership?

- The cost of repairing this code can vary depending on the specific cause of the issue, but it may range from a couple of hundred dollars to over a thousand dollars, considering parts and labor.

8. Are there any preventive measures to avoid OBDII code U2139 in the future?

- Regular vehicle maintenance, such as checking wiring integrity and keeping the column integration module in good condition, can help prevent issues that may trigger this code.

9. Can OBDII code U2139 be intermittent or occur only under specific conditions?

- Yes, this code can be intermittent and may only occur under specific driving conditions or when the communication error between components is triggered.

10. Will resetting the OBDII system clear the U2139 code permanently?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause to resolve the problem permanently.