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U1117 2014 Toyota RAV4 Code - Lost Communication with Accessory Gateway

Quick Answer

The U1117 code for a 2014 Toyota RAV4 indicates that there has been a communication failure with the accessory gateway module. Common causes include Loose or corroded electrical connections, Faulty accessory gateway module, Wiring harness issues. 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
U1117 2014 Toyota RAV4 indicates Lost Communication with Accessory Gateway.
Common causes
Common causes include Loose or corroded electrical connections, Faulty accessory gateway module, Wiring harness issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code U1117 2014 Toyota RAV4 Description

The U1117 code for a 2014 Toyota RAV4 indicates that there has been a communication failure with the accessory gateway module. The accessory gateway module is responsible for managing communication between various electronic control units (ECUs) in the vehicle, such as the audio system, navigation system, climate control, and other accessories. When communication is lost with this module, it can lead to a variety of issues with the vehicle's electronic systems.

OBDII Code U1117 2014 Toyota RAV4 - Lost Communication with Accessory Gateway
U1117 2014 Toyota RAV4 Code - Lost Communication with Accessory Gateway

Common Causes of U1117 2014 Toyota RAV4

  1. Loose or corroded electrical connections
  2. Faulty accessory gateway module
  3. Wiring harness issues
  4. Water damage or exposure to extreme temperatures
  5. Software glitches or programming errors

Symptoms of U1117 2014 Toyota RAV4

  1. Malfunctioning audio system or infotainment display
  2. Climate control system not responding to inputs
  3. Navigation system displaying errors or not working
  4. Dashboard warning lights related to electronic systems
  5. Limited functionality of accessories like power windows or door locks

How to Fix U1117 2014 Toyota RAV4

  1. Perform a thorough inspection of the wiring harness and electrical connections for any signs of damage or corrosion.
  2. Use a diagnostic scan tool to communicate with the accessory gateway module and identify any specific fault codes or issues.
  3. If the accessory gateway module is determined to be faulty, replace it with a new unit and program it to communicate with the vehicle's other ECUs.
  4. Clear the fault codes from the vehicle's memory and perform a test drive to ensure the issue has been resolved.
  5. If necessary, update the vehicle's software to ensure compatibility with the new accessory gateway module.

Cost to Fix U1117 2014 Toyota RAV4

The cost of repairing a U1117 code on a 2014 Toyota RAV4 can vary depending on the specific cause of the issue and the labor rates in your area. Generally, replacing an accessory gateway module and addressing any associated wiring or connection issues can range from $200 to $500, including parts and labor. However, it is advisable to consult with a professional mechanic or dealership for a more accurate estimate based on your vehicle's specific needs. Keep in mind that diagnostic time and labor rates can influence the final cost of the repair.

What does this mean?

Tech Notes for U1117 2014 Toyota RAV4

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.

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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 U1117 2014 Toyota RAV4 Code

1. What does OBDII code U1117 mean for a 2014 Toyota RAV4?

The U1117 code indicates a communication problem with the Accessory Gateway module in the vehicle.

2. What are the common symptoms of a U1117 code in a Toyota RAV4?

Common symptoms include issues with power windows, door locks, interior lights, and other accessories controlled by the Accessory Gateway module.

3. What are some possible causes of a U1117 code in a 2014 Toyota RAV4?

Possible causes include a faulty Accessory Gateway module, wiring issues, loose connections, or a communication network problem.

4. How can I diagnose a U1117 code in my Toyota RAV4?

Diagnosing a U1117 code typically involves using a professional OBDII scanner to retrieve the code and then performing a thorough inspection of the Accessory Gateway module, wiring, and connections.

5. Can I still drive my Toyota RAV4 with a U1117 code present?

It may be possible to drive the vehicle with a U1117 code, but it is recommended to address the issue promptly to avoid potential problems with vehicle accessories.

6. How can I repair a U1117 code in my 2014 Toyota RAV4?

Repairing a U1117 code may involve replacing the Accessory Gateway module, repairing faulty wiring or connections, or addressing any communication network issues.

7. Are there any DIY tips for fixing a U1117 code in a Toyota RAV4?

While some troubleshooting steps can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for proper diagnosis and repair of a U1117 code.

8. Is resetting the OBDII system necessary after fixing a U1117 code in a Toyota RAV4?

After repairing a U1117 code, it is advisable to clear the code using an OBDII scanner to reset the system and ensure the issue has been successfully resolved.

9. How much does it cost to fix a U1117 code in a 2014 Toyota RAV4?

The cost of fixing a U1117 code can vary depending on the underlying issue, parts needed for repair, and labor costs. It is recommended to obtain quotes from local mechanics or dealerships.

10. Can a U1117 code in a Toyota RAV4 cause any long-term damage if left unresolved?

Leaving a U1117 code unresolved can potentially lead to further issues with vehicle accessories controlled by the Accessory Gateway module. It is best to address the problem promptly to prevent any long-term damage.

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