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Home >> Lexus >> 2022 >> ES 350 Base >> Repair and Diagnosis (Single Page) >> Restraints >> Seat Belts >> Pre-Collision System - Diagnostic Codes >> Pre-Collision System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; 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 U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [08/2021 - ] >> Description
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DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; 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 U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [08/2021 - ]: Description

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

DTC No. Detection Item DTC Detection Condition Trouble Area
U0100-87 Lost Communication with ECM/PCM "A" Missing Message 3 seconds after the ignition switch is turned to ON, a communication error between the ECM and the forward recognition camera is detected for approximately 1 second or more. CAN communication system
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message While the vehicle is being driven at 5 km/h (4 mph) or more, a communication error between the airbag ECU assembly and the forward recognition camera is detected for approximately 4 seconds or more. CAN communication system
U0126-87 Lost Communication with Steering Angle Sensor Module Missing Message 3 seconds after the ignition switch is turned to ON, a communication error between the steering sensor and the forward recognition camera is detected for approximately 1 second or more. CAN communication system
U0129-87 Lost Communication with Brake System Control Module Missing Message For HV Model: 
  1. 3 seconds after the ignition switch is turned to ON, a communication error between the skid control ECU (brake booster with master cylinder assembly) and the forward recognition camera is detected for approximately 1 second or more.

For Gasoline Model: 
  1. 3 seconds after the ignition switch is turned to ON, a communication error between the skid control ECU (brake actuator assembly) and the forward recognition camera is detected for approximately 1 second or more.
 CAN communication system
U0131-87 Lost Communication with Power Steering Control Module Missing Message 3 seconds after the ignition switch is turned to ON, a communication error between the power steering ECU (rack and pinion power steering gear assembly) and the forward recognition camera is detected for approximately 2 second or more. CAN communication system
U0293-87 Lost Communication with Hybrid Powertrain Control Module Missing Message While the vehicle is being driven at 5 km/h (4 mph) or more, a communication error between the hybrid vehicle control ECU and the forward recognition camera is detected for approximately 6 seconds or more. CAN communication system
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