AutoCodes – Toyota – U0124 2016 Toyota RAV4

U0124 2016 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 2016 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.

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Code Popularity 366

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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
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Code U0124 2016 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 2016 Toyota RAV4 - Lost Communication with Lateral Acceleration Sensor Module - AutoCodes.com — U0124 2016 Toyota RAV4 Code - Lost Communication with Lateral Acceleration Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0124 2016 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 2016 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 2016 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.

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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 U0124 2016 Toyota RAV4 Code

1. What does the OBDII code U0124 mean on a 2016 Toyota RAV4?

The code U0124 indicates a "Lost Communication with Lateral Acceleration Sensor Module" error in the vehicle's onboard diagnostic system.

2. What are the common symptoms of U0124 in a 2016 Toyota RAV4?

Common symptoms of U0124 may include the traction control or stability control warning lights coming on, loss of traction control functionality, and potential impact on the vehicle's overall stability and handling.

3. What are the possible causes of the U0124 code in a 2016 Toyota RAV4?

Possible causes of the U0124 code include a faulty lateral acceleration sensor module, damaged wiring or connectors leading to the sensor module, or issues with the vehicle's electronic control module (ECM).

4. How can I diagnose the U0124 code on my 2016 Toyota RAV4?

Diagnosing the U0124 code often involves using a diagnostic scanner to retrieve the specific trouble code, checking the lateral acceleration sensor module for proper connection and functionality, and inspecting related wiring for any signs of damage.

5. Can I still drive my 2016 Toyota RAV4 with the U0124 code?

It is generally not recommended to drive your vehicle with the U0124 code present, as it can affect the vehicle's stability control systems and compromise safety on the road. It is advisable to address the issue promptly.

6. How can I repair the U0124 code on my 2016 Toyota RAV4?

Repairing the U0124 code may involve replacing the lateral acceleration sensor module if it is found to be faulty, repairing any damaged wiring or connectors, and clearing the trouble code from the vehicle's ECM.

7. Is resetting the ECM necessary after fixing the U0124 code on a 2016 Toyota RAV4?

After repairing the issue causing the U0124 code, it is recommended to clear the code and reset the ECM using a diagnostic scanner to ensure the error does not reoccur.

8. Can extreme weather conditions trigger the U0124 code on a 2016 Toyota RAV4?

Extreme weather conditions can potentially affect the lateral acceleration sensor module or its connections, leading to the U0124 code. It is important to keep the sensor and wiring protected from harsh environments.

9. How much does it cost to fix the U0124 code on a 2016 Toyota RAV4?

The cost of fixing the U0124 code can vary depending on the exact cause of the issue, the need for replacement parts, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

10. Is the U0124 code a common issue in 2016 Toyota RAV4 vehicles?

While the U0124 code may not be as common as some other OBDII codes, it can still occur in 2016 Toyota RAV4 vehicles due to sensor malfunctions or wiring issues. Regular maintenance and prompt repairs can help prevent such issues.