AutoCodes – Lexus – U0125 Lexus

U0125 Lexus 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 Lexus 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 712

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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

What does this mean?

What are the Possible Causes of the DTC U0125 Lexus?

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 Lexus?

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 Lexus 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 Lexus Code

1. What are the common symptoms of OBDII code U0125 in a Lexus related to lost communication with the yaw rate sensor module?

- Common symptoms include the ABS warning light, traction control light, and stability control light illuminating on the dashboard. Additionally, the vehicle may experience issues with the ABS system and traction control functionality.

2. What are some possible causes of the U0125 code indicating lost communication with the yaw rate sensor module in a Lexus?

- Possible causes include a faulty yaw rate sensor, damaged wiring or connectors leading to the sensor, a malfunctioning ABS module, or a communication network issue within the vehicle's system.

3. How can I diagnose the U0125 code in a Lexus related to lost communication with the yaw rate sensor module?

- Diagnosing the issue typically involves using an OBDII scanner to retrieve the specific code, checking the connections and wiring related to the yaw rate sensor, and testing the sensor's functionality using a multimeter.

4. Is it safe to drive a Lexus with the U0125 code indicating lost communication with the yaw rate sensor module illuminated?

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

5. Can the U0125 code in a Lexus be cleared/reset, or does it require professional repair?

- While the code can be cleared using an OBDII scanner, it is essential to address the underlying issue causing the communication loss with the yaw rate sensor module to prevent the code from reoccurring.

6. What are some repair tips for resolving the U0125 code related to lost communication with the yaw rate sensor module in a Lexus?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the yaw rate sensor if faulty, ensuring proper communication network connections, and resetting the system after repairs are made.

7. How much does it typically cost to repair the U0125 code in a Lexus caused by lost communication with the yaw rate sensor module?

- The cost of repair can vary depending on the specific issue, parts needed, and labor rates. It is advisable to consult with a professional mechanic or dealership for an accurate diagnosis and cost estimate.

8. Can a DIY enthusiast without extensive automotive experience attempt to fix the U0125 code in a Lexus themselves?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the underlying cause of the U0125 code may require specialized tools, expertise, and knowledge best handled by a professional mechanic.

9. How long does it typically take to repair the U0125 code indicating lost communication with the yaw rate sensor module in a Lexus?

- The repair time can vary depending on the complexity of the issue, availability of parts, and the mechanic's efficiency. Simple fixes may take a few hours, while more involved repairs could span over multiple days.

10. Are there any preventive measures to avoid encountering the U0125 code related to lost communication with the yaw rate sensor module in a Lexus?

- Regular maintenance checks, timely inspection of the vehicle's sensors and wiring, and addressing any warning lights or abnormal behavior promptly can help prevent issues leading to the U0125 code in a Lexus.