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U0155 2016 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 2016 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 285

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 2016 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 2016 Toyota RAV4 - Lost Communication with Instrument Panel Cluster Control Module - AutoCodes.com — U0155 2016 Toyota RAV4 Code - Lost Communication with Instrument Panel Cluster Control Module

What does this mean?

What are the Possible Causes of the DTC U0155 2016 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 2016 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 2016 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 2016 Toyota RAV4 Code

1. What does the OBDII code U0155 in a 2016 Toyota RAV4 mean?

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

2. What are common symptoms of the U0155 code in a 2016 Toyota RAV4?

Common symptoms include the loss of certain instrument cluster functions, such as the speedometer, fuel gauge, and warning lights. The check engine light may also illuminate.

3. What are possible causes of the U0155 code in a 2016 Toyota RAV4?

Potential causes include a faulty instrument panel cluster control module, wiring issues, loose connections, or a problem with the CAN bus communication system.

4. How can I diagnose the U0155 code in a 2016 Toyota RAV4?

Diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble codes, checking for loose connections or damaged wiring, and testing the instrument panel cluster control module.

5. Can I still drive my 2016 Toyota RAV4 with the U0155 code present?

While the vehicle may still be operational, it is not advisable to drive with an unresolved U0155 code as it can lead to inaccurate instrument readings and potential safety hazards.

6. How can I repair the U0155 code in a 2016 Toyota RAV4?

Repair options include fixing any wiring issues, replacing the instrument panel cluster control module if necessary, and ensuring all connections are secure.

7. Is it possible to reset the U0155 code in a 2016 Toyota RAV4 without repairs?

Resetting the code without addressing the underlying issue will likely result in the code reappearing. It is best to diagnose and repair the problem before attempting to reset the code.

8. Can a DIY enthusiast fix the U0155 code in a 2016 Toyota RAV4?

While some simple checks like inspecting for loose connections can be done by a DIY enthusiast, diagnosing and repairing the root cause of the U0155 code may require professional tools and expertise.

9. How much does it cost to repair the U0155 code in a 2016 Toyota RAV4?

The cost of repair can vary depending on the specific issue causing the U0155 code. It is recommended to consult a mechanic for an accurate diagnosis and cost estimate.

10. How can I prevent the U0155 code from appearing again in my 2016 Toyota RAV4?

Regular maintenance, checking for loose connections, and addressing any electrical issues promptly can help prevent the U0155 code from reoccurring in your Toyota RAV4.