AutoCodes – Buick – U0155 Buick

U0155 Buick Code - Lost Communication With Instrument Panel Cluster 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 Instrument Panel Cluster Control Module, Instrument Panel Cluster Control Module harness is open or shorted, Instrument Panel Cluster 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: U0155 Buick indicates Lost Communication With Instrument Panel Cluster Control Module.
Common causes: Common causes include Faulty Instrument Panel Cluster Control Module, Instrument Panel Cluster Control Module harness is open or shorted, Instrument Panel Cluster 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 2,329

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
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0155 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 Cluster Control Module has not been received.

OBDII Code U0155 Buick - Lost Communication With Instrument Panel Cluster Control Module - AutoCodes.com — U0155 Buick Code - Lost Communication With Instrument Panel Cluster Control Module

What does this mean?

What are the Possible Causes of the DTC U0155 Buick?

Faulty Instrument Panel Cluster Control Module
Instrument Panel Cluster Control Module harness is open or shorted
Instrument Panel Cluster Control Module circuit poor electrical connection

How to Fix the DTC U0155 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 U0155 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 U0155 Buick Code

1. What are the common symptoms of OBDII code U0155 in a Buick related to lost communication with the Instrument Panel Cluster Control Module?

- Common symptoms include loss of communication with the instrument cluster, malfunctioning gauges, warning lights staying on, and issues with the vehicle's display screen.

2. What are some possible causes of OBDII code U0155 in a Buick indicating a communication problem with the Instrument Panel Cluster Control Module?

- Potential causes can include loose or damaged wiring connections, a faulty instrument panel cluster control module, software issues, or a malfunctioning CAN bus system.

3. How can I diagnose the OBDII code U0155 in my Buick that indicates a communication failure with the Instrument Panel Cluster Control Module?

- Diagnosis typically involves checking the wiring connections, inspecting the instrument panel cluster control module for damage, scanning for other related codes, and testing the communication between modules using a diagnostic tool.

4. Is it safe to drive my Buick with an active OBDII code U0155 related to lost communication with the Instrument Panel Cluster Control Module?

- It is generally not recommended to drive the vehicle with this code active, as it can lead to inaccurate readings from the instrument cluster and potential safety hazards due to the lack of crucial information being displayed.

5. Can I reset the OBDII code U0155 in my Buick indicating a communication issue with the Instrument Panel Cluster Control Module by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is important to diagnose and address the underlying issue causing the communication problem to prevent the code from reoccurring.

6. How can I repair OBDII code U0155 in my Buick caused by a lost communication with the Instrument Panel Cluster Control Module?

- Repair options may include repairing or replacing damaged wiring, replacing the instrument panel cluster control module, updating software, or addressing any issues with the CAN bus system.

7. Will a failed instrument panel cluster control module always trigger the OBDII code U0155 in a Buick?

- Not necessarily. Other factors, such as wiring issues or communication interruptions, can also trigger the U0155 code, so a comprehensive diagnosis is necessary to determine the exact cause.

8. Can extreme weather conditions or moisture contribute to the occurrence of OBDII code U0155 in a Buick related to lost communication with the Instrument Panel Cluster Control Module?

- Yes, extreme weather conditions or moisture can potentially cause corrosion or damage to wiring connections, leading to communication problems and triggering the U0155 code.

9. How long does it typically take to repair OBDII code U0155 in a Buick due to a communication failure with the Instrument Panel Cluster Control Module?

- The repair time can vary depending on the exact cause of the issue. Simple fixes like reseating connectors may take a short time, while more complex issues like module replacement can take longer.

10. Can a DIY enthusiast without specialized tools or experience address OBDII code U0155 in a Buick related to communication problems with the Instrument Panel Cluster Control Module?

- While some basic troubleshooting like checking connections can be done by a DIY enthusiast, diagnosing and repairing more complex issues may require professional help or specialized tools.