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U0155 2015 Toyota RAV4 Code - Lost Communication with Instrument Panel Cluster Control Module

Quick Answer

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. Common causes include Faulty Controller Area Network (CAN) Communication System, 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 2015 Toyota RAV4 indicates Lost Communication with Instrument Panel Cluster Control Module.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, 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 320

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
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U0155 2015 Toyota RAV4 Description

The Controller Area Network (CAN) is a standard bus system in vehicles that enables the connection of automotive devices without the need for a host computer. The exchange of operating information and commands among devices is facilitated by pre-programmed information about the required message exchange on the serial data circuits. Communication is carried out using two dedicated wires, known as CAN high and CAN low, with both lines carrying 2.5V when the CAN bus is in idle mode. During the transmission of data bits, the CAN high line increases to 3.75V while the CAN low drops to 1.25V, creating 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 2015 Toyota RAV4 - Lost Communication with Instrument Panel Cluster Control Module - AutoCodes.com — U0155 2015 Toyota RAV4 Code - Lost Communication with Instrument Panel Cluster Control Module

What does this mean?

What are the Possible Causes of the DTC U0155 2015 Toyota RAV4?

Faulty Controller Area Network (CAN) Communication System
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 2015 Toyota RAV4?

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 does this mean?

Code Tech Notes

When there are problems with the way different systems in a vehicle communicate with each other using a technology called Controller Area Network (CAN) communication, Diagnostic Trouble Codes (DTC) are displayed. These codes can be caused by issues with the main bus or branch of the communication network, or with the Electronic Control Units (ECUs) and sensors that make up the different systems. If you see code for both the CAN communication problems and internal or power source problems at the same time, you should focus on fixing the internal or power source problems first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0155 2015 Toyota RAV4 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 2015 Toyota RAV4 Code

1. What does the OBDII code U0155 mean on a 2015 Toyota RAV4?

The U0155 code indicates a communication problem between the vehicle's engine control module (ECM) and the instrument panel cluster control module.

2. What are the common symptoms of a U0155 code in a 2015 Toyota RAV4?

Common symptoms may include loss of communication with the instrument cluster, malfunctioning gauges or warning lights, and issues with the vehicle's display screens.

3. What are some possible causes of a U0155 code in a 2015 Toyota RAV4?

Potential causes can include damaged wiring or connectors, a faulty instrument panel cluster control module, a software glitch, or a problem with the ECM.

4. How can I diagnose a U0155 code in my 2015 Toyota RAV4?

Diagnosis typically involves checking the wiring and connectors for damage, testing the communication between modules, and using a professional OBDII scanner to retrieve specific error codes.

5. Can I still drive my 2015 Toyota RAV4 with a U0155 code?

It is generally not recommended to drive the vehicle with an unresolved U0155 code, as it may lead to inaccurate instrument readings or potential safety hazards.

6. How can I repair a U0155 code in my 2015 Toyota RAV4?

Repair options may include repairing or replacing damaged wiring, replacing the instrument panel cluster control module, updating software, or seeking professional assistance for further diagnostics.

7. Is it possible to reset a U0155 code in a 2015 Toyota RAV4?

Resetting the code without addressing the underlying issue is not recommended, as the problem is likely to reoccur. It is best to diagnose and repair the root cause.

8. How much does it cost to fix a U0155 code in a 2015 Toyota RAV4?

The cost of repair can vary depending on the specific issue causing the U0155 code. It is advisable to obtain a diagnostic from a qualified technician to determine the exact cost.

9. Can a DIY enthusiast fix a U0155 code in a 2015 Toyota RAV4?

While some basic troubleshooting steps can be taken by DIY enthusiasts, resolving a U0155 code often requires specialized tools and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.

10. How can I prevent a U0155 code from appearing in my 2015 Toyota RAV4 in the future?

Regular maintenance, including checking for loose or damaged wiring, keeping software up to date, and addressing any warning signs promptly, can help prevent the occurrence of a U0155 code.