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Home >> Toyota >> 2021 >> Prius LE >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System - Diagnostic Codes & Circuit Tests >> Dynamic Radar Cruise Control System >> DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module 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 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 [07/2020 - ] >> Description
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DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module 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 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 [07/2020 - ]: Description

The forward recognition camera communicates with each sensor and ECU via CAN communication.

If any malfunction is detected in a CAN communication circuit, one or more CAN communication system 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 Missing Message When the power switch is on (IG) for 3 seconds or more, a communication error between the forward recognition camera and yaw rate sensor continues for 5 seconds or more. CAN communication system Radar Cruise2
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message When the power switch is on (IG) for 3 seconds or more, a communication error between the forward recognition camera and steering sensor continues for 5 seconds or more. CAN communication system Radar Cruise2
U0129-87 Lost Communication with Brake System Control Module Missing Message When the power switch is on (IG) for 3 seconds or more, a communication error between the forward recognition camera and skid control ECU (brake booster with master cylinder assembly) continues for 5 seconds or more. CAN communication system Radar Cruise2
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message When the power switch is on (IG) for 3 seconds or more, a communication error between the forward recognition camera and meter circuit plate (combination meter assembly) continues for 5 seconds or more. CAN communication system Radar Cruise2
U0293-87 Lost Communication with Hybrid Powertrain Control Module Missing Message When the dynamic radar cruise control system is operating, a communication malfunction between the hybrid vehicle control ECU and forward recognition camera is detected for 5 seconds or more. CAN communication system Radar Cruise2