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U1117 2015 Toyota RAV4 Code - Lost Communication with Accessory Gateway

Quick Answer

The U1117 diagnostic trouble code for a 2015 Toyota RAV4 indicates that there is a communication issue with the Accessory Gateway module. Common causes include Faulty wiring or connections in the communication network, A malfunctioning Accessory Gateway module, Corrosion or damage to the communication bus. 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 2015 Toyota RAV4 indicates Lost Communication with Accessory Gateway.
Common causes
Common causes include Faulty wiring or connections in the communication network, A malfunctioning Accessory Gateway module, Corrosion or damage to the communication bus.
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 19, 2024
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Code U1117 2015 Toyota RAV4 Description

The U1117 diagnostic trouble code for a 2015 Toyota RAV4 indicates that there is a communication issue with the Accessory Gateway module. The Accessory Gateway module is responsible for controlling various accessories in the vehicle, such as power windows, power locks, and other convenience features. When communication with this module is lost, it can lead to malfunctions in these accessories, affecting the overall usability and convenience of the vehicle.

OBDII Code U1117 2015 Toyota RAV4 - Lost Communication with Accessory Gateway
U1117 2015 Toyota RAV4 Code - Lost Communication with Accessory Gateway

Common Causes of U1117 2015 Toyota RAV4

  1. Faulty wiring or connections in the communication network
  2. A malfunctioning Accessory Gateway module
  3. Corrosion or damage to the communication bus
  4. Software issues related to the module
  5. Electrical interference from aftermarket accessories

Symptoms of U1117 2015 Toyota RAV4

  1. Power windows not functioning properly
  2. Inoperative power locks
  3. Malfunctioning interior lights
  4. Issues with remote keyless entry
  5. Erratic behavior of other electronic accessories

How to Fix U1117 2015 Toyota RAV4

  1. Diagnose the exact cause of the communication loss using a professional diagnostic tool.
  2. Inspect the wiring and connections in the communication network for any damage or corrosion.
  3. Test the Accessory Gateway module for proper functionality and replace if necessary.
  4. Clear the diagnostic trouble code from the vehicle's system memory.
  5. Test the affected accessories to ensure proper operation after the repair.

Cost to Fix U1117 2015 Toyota RAV4

The cost of repairing a U1117 code on a 2015 Toyota RAV4 can vary depending on the specific cause of the issue. In general, the cost of parts for replacing a faulty Accessory Gateway module can range from $200 to $500, while labor costs can range from $100 to $300. Overall, the total repair cost can be anywhere from $300 to $800. It's important to note that these are rough estimates, and actual costs may vary based on factors such as the location of the repair shop, the availability of parts, and the specific diagnosis time and labor rates.

What does this mean?

Tech Notes for U1117 2015 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 2015 Toyota RAV4 Code

1. What does the OBDII code U1117 mean for a 2015 Toyota RAV4?

The code U1117 means "Lost Communication with Accessory Gateway" in the OBDII system of a 2015 Toyota RAV4.

2. What are the common symptoms of a U1117 code in a 2015 Toyota RAV4?

Common symptoms of the U1117 code may include a loss of communication with certain vehicle accessories, malfunctioning infotainment system, or issues with power windows and other electronic components.

3. What are the possible causes of a U1117 code in a 2015 Toyota RAV4?

Possible causes of the U1117 code include a faulty accessory gateway module, damaged wiring or connectors, software glitches, or a communication bus problem within the vehicle's network.

4. How can I diagnose a U1117 code in my 2015 Toyota RAV4?

Diagnosing a U1117 code typically involves using a diagnostic scanner to retrieve the code, checking for other related trouble codes, inspecting wiring and connectors for damage, and testing the accessory gateway module for proper functionality.

5. Can a U1117 code in a 2015 Toyota RAV4 be fixed at home?

Fixing a U1117 code at home may be possible if you have the necessary tools and expertise. However, due to the complexity of the vehicle's electrical system, it is recommended to consult with a professional mechanic for an accurate diagnosis and repair.

6. How much does it cost to repair a U1117 code in a 2015 Toyota RAV4?

The cost of repairing a U1117 code in a 2015 Toyota RAV4 can vary depending on the underlying cause of the issue. Simple fixes like repairing wiring may cost less, while replacing a faulty accessory gateway module or addressing a communication bus problem can be more expensive.

7. Is it safe to drive with a U1117 code present in a 2015 Toyota RAV4?

Driving with a U1117 code may not present immediate safety risks, but it can lead to issues with vehicle accessories and electronic components. It is advisable to address the problem promptly to avoid further complications.

8. Can a U1117 code in a 2015 Toyota RAV4 cause other problems if left unaddressed?

If left unaddressed, a U1117 code in a 2015 Toyota RAV4 can lead to continued loss of communication with vital vehicle systems, potential malfunctions in electronic components, and overall inconvenience in operating the vehicle.

9. Are there any recalls or technical service bulletins related to the U1117 code in a 2015 Toyota RAV4?

It is recommended to check with Toyota dealerships or online resources for any recalls or technical service bulletins related to the U1117 code in a 2015 Toyota RAV4, as manufacturers may provide guidance on addressing such issues.

10. How can I prevent a U1117 code from occurring in my 2015 Toyota RAV4 in the future?

To prevent a U1117 code from occurring in the future, regularly inspect and maintain the vehicle's electrical system, avoid water damage to electronic components, and address any warning signs of communication issues promptly to prevent further damage.

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