AutoCodes – Toyota – U0124 2013 Toyota RAV4

U0124 2013 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 2013 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 266

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 2013 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 2013 Toyota RAV4 - Lost Communication with Lateral Acceleration Sensor Module - AutoCodes.com — U0124 2013 Toyota RAV4 Code - Lost Communication with Lateral Acceleration Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0124 2013 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 2013 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 2013 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 2013 Toyota RAV4 Code

1. What does the OBDII code U0124 on a 2013 Toyota RAV4 mean?

The U0124 code indicates a communication problem between the vehicle's engine control module (ECM) and the lateral acceleration sensor module.

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

Common symptoms of the U0124 code include the ABS warning light, traction control light, or stability control light illuminating on the dashboard, as well as potential issues with the vehicle's stability control system.

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

Possible causes of the U0124 code include faulty wiring or connections between the ECM and lateral acceleration sensor module, a defective lateral acceleration sensor module, or a malfunctioning ECM.

4. How can I diagnose the U0124 code on my 2013 Toyota RAV4?

Diagnosing the U0124 code typically involves using a professional OBDII scanner to retrieve the code and then inspecting the wiring, connections, and components related to the lateral acceleration sensor module for any signs of damage or malfunction.

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

It is not recommended to drive your Toyota RAV4 with the U0124 code present, as it can affect the proper functioning of the vehicle's stability control system, potentially compromising your safety on the road.

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

Repairing the U0124 code often involves checking and repairing any damaged wiring or connections, replacing the lateral acceleration sensor module if necessary, and ensuring proper communication between the ECM and sensor module.

7. Can the U0124 code be triggered by a loose gas cap on a Toyota RAV4?

No, the U0124 code specifically relates to a communication issue between the ECM and the lateral acceleration sensor module, and is not related to the gas cap or fuel system.

8. Is it possible to reset the U0124 code on a Toyota RAV4 without fixing the underlying issue?

While you can clear the code with an OBDII scanner, it is important to address the underlying communication problem between the ECM and lateral acceleration sensor module to prevent the code from reoccurring.

9. How much does it typically cost to repair the U0124 code on a 2013 Toyota RAV4?

The cost of repairing the U0124 code can vary depending on the specific cause of the issue, but it may involve expenses related to parts replacement, labor, and diagnostic fees.

10. Will the U0124 code cause my Toyota RAV4 to fail an emissions test?

The U0124 code is not directly related to emissions control, so it should not cause your Toyota RAV4 to fail an emissions test. However, it is still important to address the issue for proper vehicle functionality.