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U1002 2013 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 2013 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.

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Code Popularity 198

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
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Code U1002 2013 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 2013 Toyota RAV4 - Lost Communication with Gateway Module - AutoCodes.com — U1002 2013 Toyota RAV4 Code - Lost Communication with Gateway Module

What does this mean?

What are the Possible Causes of the DTC U1002 2013 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 2013 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 2013 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 U1002 2013 Toyota RAV4 Code

1. What does the OBDII code U1002 in a 2013 Toyota RAV4 indicate?

The U1002 code in a 2013 Toyota RAV4 signifies a communication issue with the Gateway Module, indicating lost communication.

2. What are common symptoms of the U1002 code in a 2013 Toyota RAV4?

Common symptoms of the U1002 code in a 2013 Toyota RAV4 include the check engine light illuminating, issues with vehicle performance, and possible difficulty starting the vehicle.

3. What are possible causes of the U1002 code in a 2013 Toyota RAV4?

Potential causes of the U1002 code in a 2013 Toyota RAV4 include faulty wiring or connections, a malfunctioning Gateway Module, or issues with the vehicle's network communication system.

4. How can I diagnose the U1002 code in a 2013 Toyota RAV4?

To diagnose the U1002 code in a 2013 Toyota RAV4, it is recommended to use an OBDII scanner to retrieve the specific details of the code, check for any related codes, and inspect the wiring and connections related to the Gateway Module.

5. What are some repair tips for addressing the U1002 code in a 2013 Toyota RAV4?

Repair tips for resolving the U1002 code in a 2013 Toyota RAV4 may include checking and repairing any damaged wiring or connections, replacing the Gateway Module if necessary, and ensuring proper communication within the vehicle's network system.

6. Can I drive my 2013 Toyota RAV4 with the U1002 code present?

It is not recommended to drive your 2013 Toyota RAV4 with the U1002 code present, as it may lead to further issues with vehicle performance and safety. It is advisable to address the code promptly.

7. How much does it typically cost to repair the U1002 code in a 2013 Toyota RAV4?

The cost of repairing the U1002 code in a 2013 Toyota RAV4 can vary depending on the specific cause of the issue, the parts needed for repair, and labor costs. It is advisable to consult with a professional mechanic for an accurate estimate.

8. Are there any recalls or technical service bulletins related to the U1002 code in a 2013 Toyota RAV4?

It is recommended to check with Toyota or a certified dealership for any recalls or technical service bulletins related to the U1002 code in a 2013 Toyota RAV4, as there may be specific information or remedies available.

9. Can a DIY enthusiast repair the U1002 code in a 2013 Toyota RAV4?

While some aspects of diagnosing and repairing the U1002 code in a 2013 Toyota RAV4 may be feasible for a DIY enthusiast, it is recommended to have a professional mechanic with experience in automotive electronics address the issue to ensure proper diagnosis and repair.

10. How can I prevent the U1002 code from recurring in my 2013 Toyota RAV4?

To help prevent the U1002 code from recurring in your 2013 Toyota RAV4, it is advisable to maintain regular vehicle inspections, address any communication system issues promptly, and follow proper maintenance schedules recommended by Toyota.