AutoCodes – Chevrolet – U2139 Chevrolet

U2139 Chevrolet 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 Chevrolet 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 1,197

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

What does this mean?

What are the Possible Causes of the DTC U2139 Chevrolet?

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 Chevrolet?

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

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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 U2139 Chevrolet Code

1. What are the common symptoms of OBDII code U2139 in a Chevrolet vehicle?

- Common symptoms include intermittent or total loss of power steering, issues with turn signals, malfunctioning windshield wipers, and potential problems with the vehicle's ignition system.

2. What is the primary cause of the U2139 code indicating lost communication with the Column Integration Module in a Chevrolet?

- The primary cause is typically a faulty Column Integration Module (CIM) or a poor connection between the CIM and other control modules in the vehicle.

3. How can I diagnose the U2139 code in my Chevrolet if I suspect a communication issue with the Column Integration Module?

- A diagnostic scan tool can help pinpoint the source of the communication breakdown between the CIM and other modules. Check for loose connections, damaged wiring, or a malfunctioning CIM.

4. Can I still drive my Chevrolet if the U2139 code for lost communication with the Column Integration Module is present?

- It is not recommended to drive the vehicle with the U2139 code active, especially if it is affecting critical systems like power steering or ignition. Address the issue promptly to avoid safety hazards.

5. Are there any DIY repair tips for resolving the U2139 code in a Chevrolet related to the Column Integration Module?

- DIY repairs may include checking and securing connections, inspecting wiring for damage, and resetting the code using a diagnostic tool. However, complex issues with the CIM may require professional repair.

6. Is it necessary to replace the Column Integration Module when dealing with the U2139 trouble code in a Chevrolet?

- In some cases, replacing the CIM may be necessary if it is confirmed to be the source of the communication failure. Consult with a qualified mechanic to determine the best course of action.

7. How much can I expect to pay for repairs related to the U2139 code in a Chevrolet due to lost communication with the Column Integration Module?

- Repair costs can vary depending on the extent of the issue and whether replacement parts are needed. Expect to budget for diagnostic fees, parts, and labor costs.

8. Will resetting the U2139 trouble code in my Chevrolet temporarily resolve the issue with the Column Integration Module?

- Resetting the code may temporarily clear the warning light, but if the underlying communication problem persists, the code is likely to reappear. It is essential to address the root cause of the issue.

9. Can extreme weather conditions or environmental factors trigger the U2139 trouble code in a Chevrolet?

- While rare, extreme temperatures or moisture exposure can potentially lead to communication issues with the Column Integration Module, resulting in the U2139 trouble code.

10. How long does it typically take to repair the U2139 code related to lost communication with the Column Integration Module in a Chevrolet?

- The repair time can vary based on the complexity of the issue and the availability of replacement parts. Simple fixes may take a few hours, while more involved repairs could require a day or more.