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 U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message [06/2018 - 08/2021]: Description

WARNING: This page is about a different car, the 2021 Lexus ES 350, 2021 Lexus ES 250, 2020 Lexus ES 350, and 2019 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

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	2 seconds or more after the engine switch is turned on (IG), while the vehicle is being driven at 1 km/h or 1 mph or more and the road sign assist system is on, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more.	CAN communication system
U0125-87	Lost Communication with Multi-axis Acceleration Sensor Module Missing Message	While the vehicle is being driven at 1 km/h or 1 mph or more and the road sign assist system is on, a communication error between the yaw rate sensor (airbag ECU assembly) and the forward recognition camera is detected for approximately 5 seconds or more.	CAN communication system
U0129-87	Lost Communication with Brake System Control Module Missing Message	2 seconds or more after the engine switch is turned on (IG), while the vehicle is being driven at 1 km/h or 1 mph or more and the road sign assist system is on, a communication error between the skid control ECU (brake actuator assembly) and the forward recognition camera is detected for approximately 5 seconds or more.	CAN communication system
U0140-87	Lost Communication with Body Control Module Missing Message	2 seconds or more after the engine switch is turned on (IG), while the road sign assist system is on, a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.	CAN communication system
U0155-87	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	2 seconds or more after the engine switch is turned on (IG), while the road sign assist system is on, a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more.	CAN communication system