DTC U0101-87: Lost Communication with TCM 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; DTC U0168-87: Lost Communication with Vehicle Security Control Module Missing Message; DTC U1117-87: Lost Communication with Accessory Gateway Missing Message [10/2023 - ]: Description

WARNING: This page is about a different car, the 2025 Toyota RAV4 and 2024 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

These DTCs are stored when a malfunction occurs in the CAN communication circuit.

DTC No.	Detection Item	Trouble Area
U0101-87	Lost Communication with TCM Missing Message	CAN communication system Hybrid vehicle control ECU (for HV Model) ECM (for Gasoline Model) Multiplex network door ECU
U0129-87	Lost Communication With Brake System Control Module Missing Message	CAN communication system Brake actuator assembly (No. 2 skid control ECU) (for HV Model) Brake actuator assembly (skid control ECU) (for Gasoline Model) Multiplex network door ECU
U0140-87	Lost Communication with Body Control Module Missing Message	CAN communication system Main body ECU (multiplex network body ECU) Multiplex network door ECU
U0155-87	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	CAN communication system Combination meter assembly Multiplex network door ECU
U0168-87	Lost Communication with Vehicle Security Control Module Missing Message	CAN communication system Certification ECU (smart key ECU assembly) Multiplex network door ECU
U1117-87	Lost Communication with Accessory Gateway Missing Message	CAN communication system Bus buffer ECU Multiplex network door ECU