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Home >> Lexus >> 2024 >> LC 500h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Lane Tracing Assist System - Diagnostic Codes & Circuit Tests >> Lane Tracing Assist System >> DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module "A" Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0130-87: Lost Communication with Steering Effort Control Module Missing Message; DTC U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0134-87: Lost Communication with Power Steering Control Module Rear Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [05/2023 - ] >> Description
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DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module "A" Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0130-87: Lost Communication with Steering Effort Control Module Missing Message; DTC U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0134-87: Lost Communication with Power Steering Control Module Rear Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [05/2023 - ]: Description

When a malfunction is detected between various ECUs and sensors, these DTCs are stored.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module "A" Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), while the vehicle speed is 5 km/h (3 mph) or more, a communication error between the yaw rate sensor and the forward recognition camera is detected for approximately 5 seconds or more. CAN communication system Lane Control
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), a communication malfunction between the forward recognition camera and the steering sensor is continuously detected for 5 seconds or more CAN communication system Lane Control
U0129-87 Lost Communication with Brake System Control Module Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), a communication malfunction between the forward recognition camera and the skid control ECU assembly is continuously detected for 5 seconds or more CAN communication system Lane Control
U0130-87 Lost Communication with Steering Effort Control Module Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), a communication error between the VGRS ECU (Front steering control ECU) and the forward recognition camera is detected for approximately 5 seconds or more. CAN communication system Lane Control
U0131-87 Lost Communication with Power Steering Control Module Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), a communication malfunction between the forward recognition camera and the multiplex network steering ECU (rack and pinion power steering gear assembly) is continuously detected for 5 seconds or more CAN communication system Lane Control
U0134-87 Lost Communication with Power Steering Control Module Rear Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), a communication error between the DRS ECU (Rear steering control ECU) and the forward recognition camera is detected for approximately 5 seconds or more. CAN communication system Lane Control
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), a communication malfunction between the forward recognition camera and the combination meter assembly is continuously detected for 50 seconds or more CAN communication system Lane Control
U0293-87 Lost Communication with Hybrid Powertrain Control Module Missing Message After 3 seconds or more have elapsed since turning the lane tracing assist system on and the power switch on (IG), a communication malfunction between the forward recognition camera and the hybrid vehicle control ECU assembly continues for approximately 2 seconds or more. CAN communication system Lane Control