Monitor Description

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

The ECM and hybrid vehicle control ECU assembly send and receive signals via CAN communication.

If a communication error occurs between the ECM and hybrid vehicle control ECU assembly, the ECM illuminates the MIL and stores this DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
U0293	Lost Communication with Hybrid Vehicle Control System	All of the following conditions are met for 0.576 seconds or more (1 trip detection logic): Power switch on (IG). Auxiliary battery voltage is 10.5 V or higher. No communication between ECM and hybrid vehicle control ECU assembly.	CAN communication system Hybrid vehicle control ECU assembly ECM	Comes on	DTC stored