AutoCodes – Buick – U0141 Buick

U0141 Buick Code - Lost Communication With Instrument Panel 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 Instrument Panel Module (IPM), Instrument Panel Module harness is open or shorted, Instrument Panel 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: U0141 Buick indicates Lost Communication With Instrument Panel Module.
Common causes: Common causes include Faulty Instrument Panel Module (IPM), Instrument Panel Module harness is open or shorted, Instrument Panel 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 3,017

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 Apr 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0141 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 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 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 Instrument Panel Module (IPM) has not been received.

OBDII Code U0141 Buick - Lost Communication With Instrument Panel Module - AutoCodes.com — U0141 Buick Code - Lost Communication With Instrument Panel Module

What does this mean?

What are the Possible Causes of the DTC U0141 Buick?

Faulty Instrument Panel Module (IPM)
Instrument Panel Module harness is open or shorted
Instrument Panel Module circuit poor electrical connection

How to Fix the DTC U0141 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 U0141 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 U0141 Buick Code

1. What does the OBDII code U0141 mean on a Buick?

U0141 indicates a loss of communication with the Instrument Panel Module (IPM), meaning the module isn't receiving or sending data as expected.

2. What are common symptoms of the U0141 code on a Buick?

Symptoms may include an unresponsive or malfunctioning instrument cluster, warning lights on the dashboard, failure of certain accessories, or intermittent electrical issues.

3. What causes the U0141 code in a Buick?

Common causes include a faulty Instrument Panel Module (IPM), damaged or corroded wiring, loose or disconnected connectors, or issues with the Controller Area Network (CAN) bus system.

4. Can a dead battery trigger the U0141 code?

Yes, a dead or weak battery, or improper voltage supply, can disrupt communication with the IPM and trigger the U0141 code.

5. How can I diagnose the U0141 code on my Buick?

Start by checking the battery voltage, inspecting wiring and connectors for damage, and using a scan tool to confirm communication with the IPM and other related modules.

6. Is it safe to drive with the U0141 code active?

It may be unsafe, as the instrument cluster provides critical information like speed and warning lights. Additionally, other systems may be affected, depending on the severity of the issue.

7. How do you fix the U0141 code on a Buick?

Repairs may include fixing damaged wiring, cleaning corroded connectors, replacing the IPM if faulty, or reprogramming the module if necessary.

8. Can the U0141 code clear itself?

The code might clear itself if the communication issue is temporary, but permanent issues will require diagnosis and repair to resolve.

9. Does the U0141 code always mean the Instrument Panel Module is bad?

No, the issue could also stem from wiring, connectors, or the CAN bus system, so the IPM itself may not always be the problem.

10. Do I need specialized tools to fix the U0141 code on a Buick?

Yes, a professional-grade scan tool is recommended to read and diagnose the code, check communication between modules, and perform module programming if needed.