AutoCodes – Infiniti – U0155 Infiniti

U0155 Infiniti Code - Lost Communication With Instrument Panel Cluster Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Communication error, Faulty Instrument Panel Cluster Control Module, Instrument Panel Cluster Control Module harness is open or shorted. 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 Infiniti indicates Lost Communication With Instrument Panel Cluster Control Module.
Common causes: Common causes include Communication error, Faulty Instrument Panel Cluster Control Module, Instrument Panel Cluster Control Module harness is open or shorted.
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 1,445

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 06, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0155 Infiniti Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Instrument Panel Cluster Control Module has not been received.

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

What does this mean?

What are the Possible Causes of the DTC U0155 Infiniti?

Communication error
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 Infiniti?

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 Infiniti 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 Infiniti Code

1. What are the common symptoms of OBDII code U0155 in an Infiniti?

Common symptoms include a malfunctioning instrument cluster, loss of communication with the instrument panel, warning lights on the dashboard, and inaccurate gauge readings.

2. What can cause the U0155 code in an Infiniti?

The U0155 code is typically caused by a communication error between the engine control module and the instrument panel cluster control module. This can be due to wiring issues, a faulty control module, or a software glitch.

3. How serious is the U0155 code in an Infiniti?

While the U0155 code itself does not directly affect the drivability of the vehicle, it can lead to safety issues if the instrument panel cluster is not functioning correctly. It is recommended to address this issue promptly.

4. How can I diagnose the U0155 code in my Infiniti?

Diagnosing the U0155 code requires a professional OBDII scanner to communicate with the vehicle's control modules. A thorough inspection of the wiring, connectors, and control modules is also necessary to pinpoint the exact cause of the communication failure.

5. Can I drive my Infiniti with the U0155 code present?

It is generally safe to drive your Infiniti with the U0155 code present, but it is important to address the issue as soon as possible to avoid potential safety hazards and further damage to the vehicle's systems.

6. How can I repair the U0155 code in my Infiniti?

Repairing the U0155 code may involve repairing or replacing damaged wiring, connectors, or control modules. It is recommended to consult with a professional mechanic or dealership to properly diagnose and repair the issue.

7. Is the U0155 code a common problem in Infiniti vehicles?

The U0155 code is not extremely common in Infiniti vehicles, but it can occur due to various factors such as electrical issues, software glitches, or component failures.

8. Can a DIY enthusiast fix the U0155 code in an Infiniti?

While some DIY enthusiasts may have the necessary skills to diagnose and repair the U0155 code, it is recommended to consult with a professional mechanic or dealership for accurate diagnosis and repair to ensure the issue is properly resolved.

9. Will resetting the U0155 code make it go away permanently?

Resetting the U0155 code may temporarily clear the error code, but if the underlying issue causing the communication failure is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.

10. How much does it cost to fix the U0155 code in an Infiniti?

The cost to fix the U0155 code can vary depending on the exact cause of the issue, the extent of repairs needed, and labor costs. It is advisable to obtain estimates from reputable mechanics or dealerships for an accurate cost assessment.