AutoCodes – Toyota – U0125 Toyota

U0125 Toyota 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 Toyota 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 3,161

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

What does this mean?

What are the Possible Causes of the DTC U0125 Toyota?

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 Toyota?

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 Toyota 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 U0125 Toyota code?

Need more information on how to fix the U0125 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0125 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

U0125 2013 Toyota RAV4 — Lost Communication with Yaw Rate Sensor Module
U0125 2014 Toyota RAV4 — Lost Communication with Yaw Rate Sensor Module
U0125 2015 Toyota RAV4 — Lost Communication with Yaw Rate Sensor Module
U0125 2016 Toyota RAV4 — Lost Communication with Yaw Rate Sensor Module
U0125 2017 Toyota RAV4 — Lost Communication with Yaw Rate Sensor Module
U0125 2018 Toyota RAV4 — Lost Communication with Yaw Rate Sensor Module

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 Toyota Code

What does the OBDII code U0125 mean for a Toyota vehicle?

U0125 indicates a loss of communication between the vehicle's main control modules and the yaw rate sensor module, which monitors vehicle stability.

What are the symptoms of code U0125 on a Toyota?

Common symptoms include the illumination of stability control or ABS warning lights, reduced or disabled traction control, and potential handling issues during turns.

What causes the U0125 code in a Toyota?

The code can be triggered by damaged wiring or connectors, a malfunctioning yaw rate sensor module, or issues with the vehicleâ€™s CAN communication network.

Can I still drive my Toyota with the U0125 code active?

While the vehicle may remain drivable, stability control and traction assistance could be impaired, potentially increasing the risk of losing control in slippery or high-speed conditions.

How do you diagnose code U0125 on a Toyota?

Diagnose by inspecting the yaw rate sensor module, checking for damaged wiring or loose connectors, and using a scan tool to analyze the CAN communication network.

Where is the yaw rate sensor located in a Toyota?

In most Toyota models, the yaw rate sensor is located under the center console or near the accelerator pedal area.

How can you fix the U0125 issue on a Toyota?

Repairs may include replacing damaged wiring, reconnecting loose connectors, or replacing the faulty yaw rate sensor module if it has failed.

Is the U0125 code specific to Toyota vehicles?

No, U0125 is a generic communication error code and may appear on other makes and models, though the components involved could vary.

What tools are needed to troubleshoot the U0125 code in a Toyota?

A diagnostic scan tool with CAN network capabilities, a multimeter for testing electrical connections, and basic automotive repair tools are typically required.

Does the U0125 code require professional repair?

While some repairs like reconnecting wiring can be done by DIY enthusiasts, advanced diagnostics or sensor replacement may require professional assistance.