DTC U0103: Lost Communication with Gear Shift Module "A"; DTC U0129: Lost Communication with Skid Control ECU; DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0293: Lost Communication with EV Control System; DTC U1117: Lost Communication with Accessory Gateway [06/2015 - ]: Description

These DTCs are stored when there is a CAN communication error between the hybrid vehicle control ECU assembly, certification ECU (smart key ECU assembly), main body ECU (multiplex network body ECU) or combination meter assembly, and data from the option connector (bus buffer ECU) cannot be received.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
U0103	Lost Communication with Gear Shift Module "A"	CAN communication error between the certification ECU (smart key ECU assembly) and transmission control ECU assembly	Transmission Control ECU Assembly	DTC Output Confirmation Operation: Always
U0129	Lost Communication with Skid Control ECU	CAN communication error between the certification ECU (smart key ECU assembly) and skid control ECU (brake booster with master cylinder assembly)	Skid Control ECU (Brake Booster with Master Cylinder Assembly)	DTC Output Confirmation Operation: Always
U0140	Lost Communication with Main Body ECU	CAN communication error between certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) (1-trip detection logic*)	Main body ECU (multiplex network body ECU)	DTC Output Confirmation Operation: Always
U0142	Lost Communication with Main Body ECU	CAN communication error between certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) (1-trip detection logic*)	Main body ECU (multiplex network body ECU)	DTC Output Confirmation Operation: Always
U0155	Lost Communication with Combination Meter	CAN communication error between certification ECU (smart key ECU assembly) and combination meter assembly (1-trip detection logic*)	Combination meter assembly	DTC Output Confirmation Operation: Turn the power switch on (IG) and wait 10 seconds or more.
U0293	Lost Communication with EV Control System	CAN communication error between certification ECU (smart key ECU assembly) and EV control ECU (1-trip detection logic*)	EV control ECU	DTC Output Confirmation Operation: Turn the power switch on (IG) and wait 10 seconds or more.
U1117	Lost Communication with Accessory Gateway	Data from the option connector (bus buffer ECU) cannot be received.	Connector and branch wire of sub bus 2 of option connector (bus buffer ECU) Internal malfunction of option connector (bus buffer ECU)	DTC Output Confirmation Operation: Turn the power switch on (IG) and wait 10 seconds or more.

*: Only detected while a malfunction is present.

VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

DTC No.	Vehicle Condition when Malfunction Detected	Fail-safe Function when Malfunction Detected
U0103	The hybrid control system cannot be started.	-
U0129	The hybrid control system cannot be started.	-
U0140	The warning (meter buzzer) does not sound and the meter does not indicate a warning.	-
U0142	Doors cannot be locked or unlocked. The warning (meter buzzer) does not sound and the meter does not indicate a warning.	-
U0155	The warning (meter buzzer) does not sound and the meter does not indicate a warning. There is no effect on vehicle behavior.	-
U0293	The warning (meter buzzer) does not sound and the meter does not indicate a warning.	-
U1117	The hybrid control system cannot be started using the wireless remote control function.	-

RELATED DATA LIST AND ACTIVE TEST ITEMS

DTC No.	Data List and Active Test
U0140 U0142 U0155 U0293 U1117	-

Body Electrical > Smart Key > Trouble Codes