AutoCodes – Toyota – U0125 2018 Toyota RAV4

U0125 2018 Toyota RAV4 Code - Lost Communication with Yaw Rate 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 Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly), Yaw Rate and Acceleration Sensor 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: U0125 2018 Toyota RAV4 indicates Lost Communication with Yaw Rate Sensor Module.
Common causes: Common causes include Faulty Controller Area Network (CAN) Communication System, Faulty Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly), Yaw Rate and Acceleration Sensor 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 954

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 U0125 2018 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 Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly) has not been received.

OBDII Code U0125 2018 Toyota RAV4 - Lost Communication with Yaw Rate Sensor Module - AutoCodes.com — U0125 2018 Toyota RAV4 Code - Lost Communication with Yaw Rate Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0125 2018 Toyota RAV4?

Faulty Controller Area Network (CAN) Communication System
Faulty Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly)
Yaw Rate and Acceleration Sensor harness is open or shorted
Yaw Rate and Acceleration Sensor circuit poor electrical connection

How to Fix the DTC U0125 2018 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 U0125 2018 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 U0125 2018 Toyota RAV4 Code

1. What does the OBDII code U0125 on a 2018 Toyota RAV4 mean?

The U0125 code indicates a communication problem between the vehicle's onboard computer and the Yaw Rate Sensor Module.

2. What are the common symptoms of a U0125 code in a 2018 Toyota RAV4?

Common symptoms include the ABS (Anti-Lock Braking System) warning light, traction control light, or stability control light coming on, as well as potential issues with the vehicle's stability and traction control systems.

3. What are the possible causes of a U0125 code in a 2018 Toyota RAV4?

The U0125 code is typically caused by a faulty Yaw Rate Sensor Module, damaged wiring or connectors, a software glitch, or a malfunction in the vehicle's communication network.

4. How can I diagnose a U0125 code in my 2018 Toyota RAV4?

Diagnosing a U0125 code usually involves using an OBDII scanner to read the code, checking for other related codes, inspecting the wiring and connectors to the Yaw Rate Sensor Module, and performing diagnostic tests on the sensor itself.

5. Can I continue driving my 2018 Toyota RAV4 with a U0125 code?

It is not recommended to drive the vehicle with a U0125 code present, as it can affect the proper functioning of the vehicle's stability and traction control systems, potentially compromising safety.

6. How can I repair a U0125 code in my 2018 Toyota RAV4?

Repairing a U0125 code may involve replacing the Yaw Rate Sensor Module, repairing or replacing damaged wiring or connectors, updating the vehicle's software, or resetting the system after addressing any underlying issues.

7. Will a U0125 code in my 2018 Toyota RAV4 affect the vehicle's performance?

While the U0125 code itself may not directly impact the vehicle's performance, it can lead to issues with the stability and traction control systems, affecting the overall handling and safety of the vehicle.

8. How much does it cost to fix a U0125 code in a 2018 Toyota RAV4?

The cost of fixing a U0125 code can vary depending on the underlying cause and the needed repairs. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

9. Can a U0125 code in a 2018 Toyota RAV4 be a recurring issue?

If the root cause of the U0125 code is not properly addressed during repairs, it is possible for the code to reappear. Thorough diagnosis and repair are essential to prevent recurring issues.

10. Is it possible to clear a U0125 code in a 2018 Toyota RAV4 without fixing the underlying problem?

While clearing the code temporarily may turn off warning lights, it will not fix the underlying issue causing the U0125 code. It is crucial to address the root cause to ensure the vehicle's safety and performance.