AutoCodes – Toyota – U0124 2015 Toyota RAV4

U0124 2015 Toyota RAV4 Code - Lost Communication with Lateral Acceleration Sensor 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 Lateral Acceleration Sensor Module, Lateral Acceleration Sensor 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: U0124 2015 Toyota RAV4 indicates Lost Communication with Lateral Acceleration Sensor Module.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Lateral Acceleration Sensor Module, Lateral Acceleration Sensor 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 325

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 25, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U0124 2015 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 Lateral Acceleration Sensor Module has not been received.

OBDII Code U0124 2015 Toyota RAV4 - Lost Communication with Lateral Acceleration Sensor Module - AutoCodes.com — U0124 2015 Toyota RAV4 Code - Lost Communication with Lateral Acceleration Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0124 2015 Toyota RAV4?

Faulty Controller Area Network (CAN) Communication System
Faulty Lateral Acceleration Sensor Module
Lateral Acceleration Sensor Module harness is open or shorted
Lateral Acceleration Sensor Module circuit poor electrical connection

How to Fix the DTC U0124 2015 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 U0124 2015 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.

Need more information about the U0124 2015 Toyota RAV4 code?

Need more information on how to fix the U0124 2015 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0124 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 U0124 2015 Toyota RAV4 Code

1. What does the OBDII code U0124 mean on a 2015 Toyota RAV4?

The code U0124 indicates a communication problem with the lateral acceleration sensor module in the vehicle.

2. What are common symptoms of U0124 in a 2015 Toyota RAV4?

Common symptoms include the ABS light, traction control light, or stability control light coming on, as well as potential issues with the vehicle's stability control system.

3. What are possible causes of the U0124 code in a 2015 Toyota RAV4?

Potential causes include a faulty lateral acceleration sensor module, damaged wiring or connectors, a software issue, or a communication network problem within the vehicle.

4. How can I diagnose the U0124 code in my 2015 Toyota RAV4?

Diagnosis typically involves using a scan tool to retrieve the specific fault codes, inspecting the wiring and connectors related to the lateral acceleration sensor module, and testing the sensor itself for proper function.

5. Can I still drive my 2015 Toyota RAV4 with the U0124 code present?

It is not recommended to drive the vehicle with the U0124 code active, especially if you are experiencing stability control or traction issues, as this could compromise the safety and performance of the vehicle.

6. How can I repair the U0124 code in my 2015 Toyota RAV4?

Repair options may include replacing the lateral acceleration sensor module, repairing or replacing damaged wiring or connectors, updating software if necessary, and ensuring proper communication network function.

7. Is the U0124 code in a 2015 Toyota RAV4 a serious issue?

While the U0124 code itself may not always indicate a critical problem, issues with the lateral acceleration sensor module can affect the vehicle's stability control system, so it is important to address this code promptly.

8. Can a DIY enthusiast fix the U0124 code in a 2015 Toyota RAV4?

Depending on the specific cause of the U0124 code, some DIY enthusiasts with the necessary tools and knowledge may be able to address the issue themselves, such as checking and repairing wiring connections.

9. How much does it cost to repair the U0124 code in a 2015 Toyota RAV4?

The cost of repairs for the U0124 code can vary widely depending on the specific cause of the issue, the parts needed, and whether you choose to address the problem yourself or take the vehicle to a professional mechanic.

10. Will resetting the U0124 code make it go away permanently?

Resetting the code may temporarily clear the warning lights, but if the underlying issue causing the U0124 code is not addressed, the code is likely to reappear once the vehicle's systems detect the problem again.