LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> RX 400h FWD >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC U0293 Lost Communication with HV ECU >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U0293 Lost Communication with HV ECU: Description

The Controller Area Network (CAN) is a serial data communication system for real-time application. It is a multiplex communication system designed for on-vehicle use that provides a superior communication speed of 500 kbps and a capability to detect malfunctions. Through the combination of the CANH and CANL bus lines, the CAN is able to maintain communication based on differential voltage.

DTC DETECTING CONDITION

DTC No. DTC Detecting Condition Trouble Area
U0293 When communication with HV control ECU is interrupted
(1 trip detection logic)
  • Wire harness
  • HV control ECU