DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message [08/2023 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.

The charge control ECU built into the electric vehicle charger assembly communicates with the ECM, meter circuit plate and hybrid vehicle control ECU via CAN communication.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
U0100-87	Lost Communication with ECM/PCM "A" Missing Message	A CAN communication error between the ECM and electric vehicle charger assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Comes on	Master Warning: Comes on	Plug-in Control	B	SAE Code: U0100
U0155-87	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	A CAN communication error between the meter circuit plate and electric vehicle charger assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Does not come on	Plug-in Control	B	SAE Code: U0155
U0293-87	Lost Communication with Hybrid/EV Powertrain Control Module Missing Message	A CAN communication error between the hybrid vehicle control ECU and electric vehicle charger assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Comes on	Master Warning: Comes on	Plug-in Control	B	SAE Code: U0293