Engine-Codes.com
Engine-Codes – Toyota – U0142 2015 Toyota RAV4

U0142 2015 Toyota RAV4 Code - Lost Communication with Body Control Module 'B'

Quick Answer

The U0142 diagnostic trouble code indicates that the communication between the Engine Control Module (ECM) and the Body Control Module 'B' has been lost. Common causes include Faulty wiring or connections between the ECM and Body Control Module 'B', Corrosion or damage to the communication lines, A defective Body Control Module 'B'. 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
U0142 2015 Toyota RAV4 indicates Lost Communication with Body Control Module 'B'.
Common causes
Common causes include Faulty wiring or connections between the ECM and Body Control Module 'B', Corrosion or damage to the communication lines, A defective Body Control Module 'B'.
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
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code U0142 2015 Toyota RAV4 Description

The U0142 diagnostic trouble code indicates that the communication between the Engine Control Module (ECM) and the Body Control Module 'B' has been lost. The Body Control Module 'B' is responsible for controlling various functions related to the vehicle's body, such as the lighting, power windows, central locking, and other comfort features. When communication is lost with this module, it can lead to issues with the proper functioning of these systems.

OBDII Code U0142 2015 Toyota RAV4 - Lost Communication with Body Control Module 'B'
U0142 2015 Toyota RAV4 Code - Lost Communication with Body Control Module 'B'

Common Causes of U0142 2015 Toyota RAV4

  1. Faulty wiring or connections between the ECM and Body Control Module 'B'.
  2. Corrosion or damage to the communication lines.
  3. A defective Body Control Module 'B'.
  4. Software or programming issues within the modules.
  5. Electrical issues such as a low battery voltage or a faulty ground connection.

Symptoms of U0142 2015 Toyota RAV4

  1. Malfunctioning lights (interior or exterior).
  2. Inoperative power windows or central locking system.
  3. Erratic behavior of body-related systems.
  4. Vehicle stalling or failure to start.

How to Fix U0142 2015 Toyota RAV4

  1. Begin by inspecting the wiring and connections between the ECM and Body Control Module 'B' for any signs of damage, corrosion, or loose connections.
  2. Check the communication lines for any faults or breaks and repair or replace them as needed.
  3. Test the Body Control Module 'B' for functionality and replace it if it is found to be defective.
  4. Update or reprogram the software in the modules to ensure proper communication.
  5. Address any underlying electrical issues that could be affecting the communication between the modules.

Cost to Fix U0142 2015 Toyota RAV4

The cost of repairing a lost communication issue with the Body Control Module 'B' can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, you can expect to pay anywhere from $200 to $600 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get quotes from multiple shops to find the best price.

What does this mean?

Tech Notes for U0142 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.

Need more information about the U0142 2015 Toyota RAV4 code?

Need more information on how to fix the U0142 2015 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0142 2015 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 U0142 2015 Toyota RAV4 Code

1. What are the common symptoms of OBDII code U0142 in a 2015 Toyota RAV4?

- Common symptoms include issues with power windows, central locking system, interior lights, and other body control functions.

2. What does the OBDII code U0142 mean for a 2015 Toyota RAV4?

- The code U0142 indicates a lost communication error with the Body Control Module 'B'.

3. What are the possible causes of the U0142 code in a 2015 Toyota RAV4?

- Possible causes include damaged wiring, loose connections, a faulty Body Control Module 'B', or issues with the CAN bus communication system.

4. How can I diagnose the U0142 code in my 2015 Toyota RAV4?

- Diagnosing the U0142 code typically involves checking the wiring, connections, and components related to the Body Control Module 'B' using a diagnostic scanner.

5. Can I still drive my 2015 Toyota RAV4 with the U0142 code present?

- It is not recommended to drive the vehicle with the U0142 code active, as it could lead to further electrical issues and potentially affect the vehicle's safety systems.

6. How can I repair the U0142 code in my 2015 Toyota RAV4?

- Repairing the U0142 code may involve repairing or replacing damaged wiring, ensuring proper connections, or replacing the Body Control Module 'B' if necessary.

7. Is the U0142 code a serious issue in a 2015 Toyota RAV4?

- The U0142 code should be addressed promptly as it can affect the proper functioning of various body control features in the vehicle.

8. Can a DIY enthusiast fix the U0142 code in a 2015 Toyota RAV4?

- While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing the U0142 code may require professional expertise and specialized tools.

9. How much does it cost to repair the U0142 code in a 2015 Toyota RAV4?

- The cost of repairing the U0142 code can vary depending on the underlying cause, parts needed, and labor costs. It is recommended to get a professional diagnosis for an accurate estimate.

10. Will resetting the OBDII code U0142 make it go away permanently in a 2015 Toyota RAV4?

- Simply resetting the code may temporarily clear the error, but if the underlying issue causing the U0142 code is not addressed, it is likely to reappear.

Discuss the causes and fixes for U0142 2015 Toyota RAV4 OBDII Code

Submit a New Comment

Code U0142 2015 Toyota RAV4 comments

No comments found for this page.