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U0073 2014 Toyota RAV4 Code - Control Module Communication Bus Off

Quick Answer

The U0073 code for a 2014 Toyota RAV4 indicates a problem with the Control Module Communication Bus, specifically that it is "off." This code typically means that there is a communication issue between various control modules in the vehicle. Common causes include Faulty wiring or connectors, Damaged control modules, Loose connections. 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
U0073 2014 Toyota RAV4 indicates Control Module Communication Bus Off.
Common causes
Common causes include Faulty wiring or connectors, Damaged control modules, Loose connections.
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 Sep 16, 2024
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Code U0073 2014 Toyota RAV4 Description

The U0073 code for a 2014 Toyota RAV4 indicates a problem with the Control Module Communication Bus, specifically that it is "off." This code typically means that there is a communication issue between various control modules in the vehicle. Control modules are electronic components that manage and regulate different systems in the vehicle, such as the engine, transmission, brakes, and more. When the communication bus is "off," it means that these modules are not able to exchange data and information effectively, which can lead to a range of issues.

OBDII Code U0073 2014 Toyota RAV4 - Control Module Communication Bus Off
U0073 2014 Toyota RAV4 Code - Control Module Communication Bus Off

Common Causes of U0073 2014 Toyota RAV4

  1. Faulty wiring or connectors
  2. Damaged control modules
  3. Loose connections
  4. Issues with the communication network
  5. Water damage or corrosion

Symptoms of U0073 2014 Toyota RAV4

  1. Rough engine performance
  2. Erratic transmission shifting
  3. ABS system malfunctions
  4. Loss of power or stalling
  5. Dashboard warning lights illuminated

How to Fix U0073 2014 Toyota RAV4

  1. Diagnose the specific control module causing the communication issue
  2. Inspect wiring and connectors for damage or corrosion
  3. Check for loose connections and secure them properly
  4. Test the communication network for faults and repair as needed
  5. Clear the code and perform a test drive to ensure the issue has been resolved

Cost to Fix U0073 2014 Toyota RAV4

The typical repair costs for addressing the U0073 code in a 2014 Toyota RAV4 can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may charge less. It's recommended to obtain quotes from local shops for a more accurate estimate.

What does this mean?

Tech Notes for U0073 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 U0073 2014 Toyota RAV4 Code

1. What does the OBDII code U0073 on a 2014 Toyota RAV4 indicate?

The U0073 code in a 2014 Toyota RAV4 indicates a communication bus off error pertaining to the control module.

2. What are the common symptoms of the U0073 code in a 2014 Toyota RAV4?

Common symptoms of the U0073 code in a 2014 Toyota RAV4 include loss of communication with various control modules, illuminated warning lights on the dashboard, and potential difficulty shifting gears.

3. What are the possible causes of the U0073 code in a 2014 Toyota RAV4?

Possible causes of the U0073 code in a 2014 Toyota RAV4 include faulty control module, damaged wiring or connectors, software issues, or a malfunction in the communication network.

4. How is the U0073 code diagnosed in a 2014 Toyota RAV4?

Diagnosing the U0073 code in a 2014 Toyota RAV4 involves using an OBDII scanner to retrieve the code, checking for other related codes, inspecting the wiring and connectors for damage, and testing the control modules for communication faults.

5. What are some repair tips for fixing the U0073 code in a 2014 Toyota RAV4?

Repair tips for fixing the U0073 code in a 2014 Toyota RAV4 may include repairing or replacing damaged wiring or connectors, reprogramming or replacing the control module, and ensuring proper communication network functionality.

6. Can the U0073 code in a 2014 Toyota RAV4 cause drivability issues?

Yes, the U0073 code in a 2014 Toyota RAV4 can cause drivability issues such as rough idling, stalling, or difficulty in shifting gears due to communication problems between control modules.

7. Is it safe to drive with the U0073 code illuminated on a 2014 Toyota RAV4?

It is not recommended to drive with the U0073 code illuminated on a 2014 Toyota RAV4 as it may lead to potential safety hazards and further damage to the vehicle's systems.

8. How much does it typically cost to repair the U0073 code in a 2014 Toyota RAV4?

The cost to repair the U0073 code in a 2014 Toyota RAV4 can vary depending on the underlying issue, but it may range from a few hundred dollars for basic repairs to over a thousand dollars for more complex issues.

9. Can the U0073 code in a 2014 Toyota RAV4 be reset without fixing the underlying problem?

While the U0073 code in a 2014 Toyota RAV4 can be cleared with an OBDII scanner, resetting the code without addressing the underlying issue will likely result in the code reappearing once the problem persists.

10. Are there any recalls or technical service bulletins related to the U0073 code in a 2014 Toyota RAV4?

It's recommended to check with Toyota's official website or contact a dealership to inquire about any recalls or technical service bulletins related to the U0073 code in a 2014 Toyota RAV4.

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