AutoCodes – Buick – U0131 Buick

U0131 Buick Code - Lost Communication with Power Steering Control Module

Quick Answer

Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Power Steering Control Module, Power Steering Control Module harness is open or shorted, Power Steering 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: U0131 Buick indicates Lost Communication with Power Steering Control Module.
Common causes: Common causes include Faulty Power Steering Control Module, Power Steering Control Module harness is open or shorted, Power Steering 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 1,782

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 Mar 27, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0131 Buick Description

Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages need 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 module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Power Steering Control Module has not been received.

OBDII Code U0131 Buick - Lost Communication with Power Steering Control Module - AutoCodes.com — U0131 Buick Code - Lost Communication with Power Steering Control Module

What does this mean?

What are the Possible Causes of the DTC U0131 Buick?

Faulty Power Steering Control Module
Power Steering Control Module harness is open or shorted
Power Steering Control Module circuit poor electrical connection

How to Fix the DTC U0131 Buick?

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 U0131 Buick 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 U0131 Buick Code

1. What are the common symptoms of OBDII code U0131 Buick - Lost Communication with Power Steering Control Module?

- Common symptoms include loss of power steering assistance, illuminated power steering warning light on the dashboard, and potential difficulty in steering the vehicle.

2. What are the potential causes of OBDII code U0131 Buick?

- The code U0131 typically indicates a communication error between the vehicle's onboard computer and the power steering control module. This can be caused by wiring issues, a faulty power steering control module, or problems with the vehicle's network communication system.

3. How can I diagnose the issue related to OBDII code U0131 in my Buick?

- To diagnose the issue, you can use a professional OBDII scanner to read the trouble codes and check for any additional codes related to communication errors. It is also important to inspect the wiring connections between the onboard computer and the power steering control module.

4. Can I continue driving my Buick with OBDII code U0131 present?

- It is not recommended to drive your vehicle with the code U0131 as it can affect the power steering functionality, potentially leading to safety issues. It is best to address the problem as soon as possible.

5. How can I repair OBDII code U0131 Buick - Lost Communication with Power Steering Control Module?

- The repair process may involve checking and repairing any damaged wiring connections, replacing the power steering control module if necessary, and clearing the trouble codes with a diagnostic tool.

6. Can a DIY enthusiast fix OBDII code U0131 in a Buick?

- While some basic troubleshooting steps like checking connections can be done by a DIY enthusiast, diagnosing and repairing communication errors involving the power steering control module may require professional expertise and specialized tools.

7. Are there any preventive measures to avoid OBDII code U0131 in a Buick?

- Regular vehicle maintenance, including checking the electrical connections and wiring harnesses, can help prevent communication errors that trigger the U0131 trouble code in Buick vehicles.

8. Will resetting the trouble codes make OBDII code U0131 disappear permanently?

- Resetting the trouble codes may temporarily clear the U0131 code, but if the underlying issue causing the communication error is not addressed, the code is likely to reappear.

9. How long does it typically take to repair OBDII code U0131 in a Buick?

- The repair time for OBDII code U0131 can vary depending on the exact cause of the communication error. Simple fixes like reconnecting loose wires may take a short time, while replacing a faulty control module could require more extensive work.

10. Is it necessary to visit a dealership for OBDII code U0131 repair, or can an independent mechanic handle it?

- Both dealerships and independent mechanics with the right expertise and diagnostic tools can address OBDII code U0131 in a Buick. It is essential to choose a reputable service provider familiar with diagnosing and repairing such communication errors.