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U0155 2017 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 2017 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 293

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 2017 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 2017 Toyota RAV4 - Lost Communication with Instrument Panel Cluster Control Module - AutoCodes.com — U0155 2017 Toyota RAV4 Code - Lost Communication with Instrument Panel Cluster Control Module

What does this mean?

What are the Possible Causes of the DTC U0155 2017 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 2017 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 2017 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 2017 Toyota RAV4 Code

1. What does the OBDII code U0155 in a 2017 Toyota RAV4 mean?

The code U0155 indicates a "Lost Communication with Instrument Panel Cluster Control Module" error in the vehicle's onboard diagnostics system.

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

Common symptoms of the U0155 code may include loss of communication with the instrument cluster, non-functioning gauges or warning lights, and issues with the vehicle's display screen.

3. What are the possible causes of the U0155 code in a 2017 Toyota RAV4?

Possible causes of the U0155 code include a faulty instrument panel cluster control module, wiring or connection issues, a blown fuse, or a software glitch.

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

Diagnosing the U0155 code typically involves checking the connections to the instrument panel cluster control module, inspecting the wiring for damage, and using a diagnostic scanner to communicate with the module.

5. Can I continue driving my Toyota RAV4 with the U0155 code present?

It is not recommended to continue driving your RAV4 with the U0155 code present, as it may lead to inaccurate readings from the instrument cluster and potential safety hazards.

6. How can I repair the U0155 code in my 2017 Toyota RAV4?

To repair the U0155 code, you may need to replace the instrument panel cluster control module, repair any damaged wiring or connections, or reprogram the module if a software issue is identified.

7. Is the U0155 code a common issue in Toyota RAV4 vehicles?

While the U0155 code may not be extremely common in Toyota RAV4 vehicles, it can still occur due to various factors such as electrical issues or component failures.

8. Can a DIY enthusiast fix the U0155 code in a Toyota RAV4?

Depending on the root cause of the U0155 code, some DIY enthusiasts with automotive repair experience may be able to address the issue, especially if it involves checking connections or replacing a fuse.

9. How much does it typically cost to repair the U0155 code in a 2017 Toyota RAV4?

The cost of repairing the U0155 code in a Toyota RAV4 can vary significantly depending on the exact cause of the issue, the labor rates in your area, and whether you choose to repair it yourself or seek professional help.

10. Will resetting the fault codes make the U0155 code disappear?

Resetting the fault codes may temporarily clear the U0155 code, but if the underlying issue causing the communication loss is not addressed, the code is likely to reappear after some time.