AutoCodes – Toyota – U0124 2014 Toyota RAV4

U0124 2014 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 2014 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 368

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 2014 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 2014 Toyota RAV4 - Lost Communication with Lateral Acceleration Sensor Module - AutoCodes.com — U0124 2014 Toyota RAV4 Code - Lost Communication with Lateral Acceleration Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0124 2014 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 2014 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 2014 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 2014 Toyota RAV4 Code

1. What are the common symptoms of OBDII code U0124 in a 2014 Toyota RAV4?

The common symptoms of code U0124 "Lost Communication with Lateral Acceleration Sensor Module" in a 2014 Toyota RAV4 include the malfunction indicator light (MIL) illuminating on the dashboard, stability control issues, and potential loss of traction control functionality.

2. What can cause the OBDII code U0124 to appear in a 2014 Toyota RAV4?

The U0124 code in a 2014 Toyota RAV4 is typically triggered by issues such as a faulty lateral acceleration sensor module, damaged wiring or connectors related to the sensor module, or communication network problems within the vehicle.

3. How can I diagnose the source of the "Lost Communication with Lateral Acceleration Sensor Module" code in my 2014 Toyota RAV4?

To diagnose the U0124 code in a 2014 Toyota RAV4, you can start by checking the lateral acceleration sensor module, inspecting its wiring and connectors for damage, and using a diagnostic scanner to analyze the communication network for any faults.

4. Can I still drive my 2014 Toyota RAV4 with the U0124 trouble code present?

It is not recommended to drive your 2014 Toyota RAV4 with the U0124 code active, as it can affect the vehicle's stability control system and potentially compromise safety features like traction control. It is best to address the issue promptly.

5. How can I repair the U0124 trouble code in my 2014 Toyota RAV4?

Repairing the U0124 code in a 2014 Toyota RAV4 involves troubleshooting the lateral acceleration sensor module, checking and repairing any damaged wiring or connectors, and resetting the trouble code using a diagnostic tool once the underlying issue is resolved.

6. Are there any DIY tips for fixing the U0124 code in a 2014 Toyota RAV4?

While diagnosing and repairing the U0124 code may require specialized tools and expertise, you can start by visually inspecting the sensor module and its connections for any obvious issues before seeking professional help.

7. How much does it typically cost to fix the U0124 trouble code in a 2014 Toyota RAV4?

The cost of fixing the U0124 code in a 2014 Toyota RAV4 can vary depending on the exact cause of the issue. Repairs may involve replacing the lateral acceleration sensor module, repairing wiring, or addressing communication network problems, so costs can range from a few hundred to over a thousand dollars.

8. Can a disconnected or damaged lateral acceleration sensor module cause the U0124 trouble code in a 2014 Toyota RAV4?

Yes, a disconnected or damaged lateral acceleration sensor module can trigger the U0124 code in a 2014 Toyota RAV4, as the vehicle's system is unable to communicate effectively with this sensor, leading to stability control issues.

9. Will resetting the trouble codes make the U0124 code in a 2014 Toyota RAV4 go away permanently?

Resetting the trouble codes may temporarily clear the U0124 code in a 2014 Toyota RAV4, but if the underlying issue with the lateral acceleration sensor module or its communication persists, the code is likely to reappear. It is crucial to diagnose and fix the root cause.

10. Is the U0124 trouble code in a 2014 Toyota RAV4 a serious issue?

The U0124 code indicating "Lost Communication with Lateral Acceleration Sensor Module" in a 2014 Toyota RAV4 is a significant issue as it can affect the vehicle's stability control and traction functions. Prompt attention and repair are recommended to ensure safe driving conditions.