AutoCodes – Pontiac – U2139 Pontiac

U2139 Pontiac 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 Pontiac 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 548

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

What does this mean?

What are the Possible Causes of the DTC U2139 Pontiac?

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 Pontiac?

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 Pontiac 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 U2139 Pontiac Code

1. What are the common symptoms of OBDII code U2139 "Lost Communication With Column Integration Module" in a Pontiac?

- Common symptoms include issues with power steering, malfunctioning turn signals, erratic wipers, and difficulty starting the vehicle.

2. What are the possible causes of the U2139 trouble code in a Pontiac?

- The code can be triggered by a faulty column integration module, damaged wiring or connectors, a weak battery, or a malfunctioning power steering control module.

3. How can I diagnose the U2139 code in my Pontiac?

- Diagnosing the U2139 code typically involves using a professional OBDII scanner to read the code, checking for any related codes, inspecting the wiring and connectors, and testing the column integration module.

4. Can a DIY enthusiast repair the U2139 code in a Pontiac?

- While some simple fixes like checking and tightening the connectors or resetting the system may help, complex repairs involving module replacement or wiring repairs are best left to experienced mechanics.

5. Is it safe to continue driving with the U2139 trouble code in a Pontiac?

- It is not recommended to drive the vehicle with the U2139 code as it can lead to safety hazards due to malfunctioning steering, signaling, or other critical systems.

6. How much does it cost to repair the U2139 code in a Pontiac?

- The cost of repairing the U2139 code in a Pontiac can vary depending on the exact cause of the issue, but it may range from a few hundred dollars for simple fixes to over a thousand dollars for complex repairs involving module replacement.

7. Can a low battery trigger the U2139 trouble code in a Pontiac?

- Yes, a weak or failing battery can sometimes lead to communication errors between modules, including triggering the U2139 code in a Pontiac.

8. Will disconnecting the battery reset the U2139 code in a Pontiac?

- Disconnecting the battery may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear after driving the vehicle for some time.

9. How long does it take to repair the U2139 code in a Pontiac?

- The repair time for the U2139 code can vary depending on the exact cause and the complexity of the repair, but it may take a few hours to a full day for a mechanic to diagnose and fix the issue.

10. Can a Pontiac owner prevent the U2139 trouble code from appearing?

- Regular maintenance, such as checking the battery health, keeping the wiring connections secure, and addressing any warning signs promptly, can help prevent the U2139 code from appearing in a Pontiac.