AutoCodes – Toyota – U1002 2016 Toyota RAV4

U1002 2016 Toyota RAV4 Code - Lost Communication with Gateway 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 Gateway Module, Gateway 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: U1002 2016 Toyota RAV4 indicates Lost Communication with Gateway Module.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Gateway Module, Gateway 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 321

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 28, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U1002 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 Gateway Module has not been received.

OBDII Code U1002 2016 Toyota RAV4 - Lost Communication with Gateway Module - AutoCodes.com — U1002 2016 Toyota RAV4 Code - Lost Communication with Gateway Module

What does this mean?

What are the Possible Causes of the DTC U1002 2016 Toyota RAV4?

Faulty Controller Area Network (CAN) Communication System
Faulty Gateway Module
Gateway Module harness is open or shorted
Gateway Module circuit poor electrical connection

How to Fix the DTC U1002 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 U1002 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.

Need more information about the U1002 2016 Toyota RAV4 code?

Need more information on how to fix the U1002 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1002 2016 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

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 U1002 2016 Toyota RAV4 Code

1. What does the OBDII code U1002 mean for a 2016 Toyota RAV4?

The U1002 code indicates a communication problem between the vehicle's control module and the gateway module.

2. What are some common symptoms of the U1002 code in a 2016 Toyota RAV4?

Common symptoms include issues with the vehicle's network communications, such as loss of communication with certain modules, warning lights on the dashboard, and limited functionality of vehicle systems.

3. What are some potential causes of the U1002 code in a 2016 Toyota RAV4?

Potential causes include loose or damaged wiring connections, a faulty gateway module, software issues, water damage, or a malfunctioning control module.

4. How can I diagnose the U1002 code in a 2016 Toyota RAV4?

Diagnosing the U1002 code typically involves using a diagnostic scanner to retrieve the specific details of the code, checking the wiring connections for any issues, and performing a network communication test.

5. How can I repair the U1002 code in a 2016 Toyota RAV4?

Repairing the U1002 code may involve fixing any wiring issues, replacing the gateway module if necessary, updating software, and ensuring all modules are communicating properly.

6. Can I drive my 2016 Toyota RAV4 with the U1002 code?

It's generally not recommended to drive your vehicle with the U1002 code present, as it can affect the proper functioning of various vehicle systems and potentially lead to further issues.

7. Is it safe to reset the U1002 code in a 2016 Toyota RAV4?

While you can attempt to reset the code using a diagnostic scanner, it's important to diagnose and address the underlying issue causing the code to prevent it from recurring.

8. How much does it cost to repair the U1002 code in a 2016 Toyota RAV4?

The cost of repairing the U1002 code can vary depending on the underlying cause, such as wiring repairs, module replacements, or software updates. It's best to consult a professional for an accurate estimate.

9. Can the U1002 code in a 2016 Toyota RAV4 be related to other codes?

Yes, the U1002 code can sometimes be related to other communication or network-related codes, so it's important to thoroughly diagnose and address all relevant codes to ensure proper vehicle functionality.

10. How can I prevent the U1002 code from appearing in my 2016 Toyota RAV4?

To prevent the U1002 code, it's essential to regularly maintain your vehicle, check for loose wiring connections, avoid water damage, and promptly address any warning lights or communication issues.