DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0151: Lost Communication with Restraints Control Module [10/2013 - ]: Description

WARNING: This page is about a different car, the 2014 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

The combination meter assembly communicates with the ECM, brake actuator assembly (skid control ECU), power steering ECU with motor assembly, main body ECU (multiplex network body ECU) and airbag sensor assembly via the CAN communication system.

DTC No.	DTC Detection Condition	Trouble Area
U0100	When IG voltage is 9.5 V or more and the following condition is detected: No communication with ECM continues for 2 seconds or more	ECM CAN communication system Combination meter assembly
U0129	When IG voltage is 9.5 V or more and the following condition is detected: No communication with brake actuator assembly (skid control ECU) continues for 3 seconds or more	Brake actuator assembly (Skid control ECU) CAN communication system Combination meter assembly
U0131	When IG voltage is 9.5 V or more and the following condition is detected: No communication with power steering ECU with motor assembly continues for 3 seconds or more	Power steering ECU with motor assembly CAN communication system Combination meter assembly
U0142	When IG voltage is 9.5 V or more and the following condition is detected: No communication with main body ECU (multiplex network body ECU) continues for 3 seconds or more	Main body ECU (Multiplex network body ECU) CAN communication system Combination meter assembly
U0151	When IG voltage is 9.5 V or more and the following condition is detected: No communication with airbag sensor assembly continues for 10 seconds or more	Airbag sensor assembly CAN communication system Combination meter assembly