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DTC U0073-00: Control Module Communication Bus "A" Off; DTC U0100-00: Lost Communication With ECM/PCM "A"; DTC U0121-00: Lost Communication With Anti-Lock Brake System (ABS) Control Module; DTC U0131-00: Lost Communication With Power Steering Control Module; DTC U0155-00: Lost Communication With Instrument Panel Cluster (IPC) Control Module; DTC U0214-00: Lost Communication With Remote Function Actuation [08/2019 - ]: Contents

DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Memory	Fail-safe Operation	Note
U0073-00	Control Module Communication Bus "A" Off	CAN system communication error (HS CAN)	Check engine light: Not applicable Automatic transaxle warning light: Not applicable	DTC Stored	Applicable	Drive cycle: 1 Self test type: CMDTC self test, On-demand self-test
U0100-00	Lost Communication With ECM/PCM "A"	Communication error to ECM (HS CAN)	Check engine light: Illuminated Automatic transaxle warning light: Not applicable	DTC Stored	Applicable	Drive cycle: 1 Self test type: CMDTC self test, On-demand self-test
U0121-00	Lost Communication With Anti-Lock Brake System (ABS) Control Module	Communication error to brake actuator (with ABS)/brake actuator (with DSC)	Check engine light: Illuminated Automatic transaxle warning light: Not applicable	DTC Stored	Applicable	Drive cycle: 1 Self test type: CMDTC self test, On-demand self-test
U0131-00	Lost Communication With Power Steering Control Module	Communication error to power steering ECU	Check engine light: Not applicable Automatic transaxle warning light: Not applicable	DTC Stored	Applicable	Drive cycle: 1 Self test type: CMDTC self test, On-demand self-test
U0155-00	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Communication error to combination meter	Check engine light: Illuminated Automatic transaxle warning light: Not applicable	DTC Stored	Applicable	Drive cycle: 1 Self test type: CMDTC self test, On-demand self-test
U0214-00	Lost Communication With Remote Function Actuation	Communication error to engine stop and start ECU	Check engine light: Not applicable Automatic transaxle warning light: Not applicable	DTC Stored	Applicable	Drive cycle: 1 Self test type: CMDTC self test, On-demand self-test

DTC DETECTION CONDITION	U0073-00 CAN system communication error (HS CAN)
DTC DETECTION CONDITION	Under the following condition, a communication error (HS CAN) occurs: Battery voltage is 10 V or more.
FAIL-SAFE OPERATION	Inhibits learning control. Inhibits neutral idle control. Inhibits AAS.
TROUBLE AREA	CAN bus communication line malfunction (HS CAN) TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC DETECTION CONDITION	U0100-00 Communication error to ECM (HS CAN)
DTC DETECTION CONDITION	Under the following condition, the TCM cannot receive the signal from ECM (HS CAN): Battery voltage is 10 V or more.
FAIL-SAFE OPERATION	Inhibits learning control. Inhibits neutral idle control. Inhibits AAS.
TROUBLE AREA	CAN communication line malfunction between ECM and TCM (HS CAN) TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC DETECTION CONDITION	U0121-00 Communication error to brake actuator (with ABS)/brake actuator (with DSC)
DTC DETECTION CONDITION	Under the following condition, the TCM cannot receive the signal from brake actuator (with ABS)/brake actuator (with DSC): Battery voltage is 10 V or more.
FAIL-SAFE OPERATION	Inhibits learning control. Inhibits neutral idle control. Inhibits AAS.
TROUBLE AREA	CAN communication line malfunction between TCM and brake actuator (with ABS)/brake actuator (with DSC) TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC DETECTION CONDITION	U0131-00 Communication error to power steering ECU
DTC DETECTION CONDITION	Under the following condition, the TCM cannot receive the signal from power steering ECU: Battery voltage is 10 V or more.
FAIL-SAFE OPERATION	Inhibits learning control. Inhibits neutral idle control.
TROUBLE AREA	CAN communication line malfunction between TCM and power steering ECU TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC DETECTION CONDITION	U0155-00 Communication error to combination meter
DTC DETECTION CONDITION	Under the following condition, the TCM cannot receive the signal from combination meter: Battery voltage is 10 V or more.
FAIL-SAFE OPERATION	Inhibits learning control. Inhibits manual mode. Inhibits neutral idle control.
TROUBLE AREA	CAN communication line malfunction between TCM and combination meter TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC DETECTION CONDITION	U0214-00 Communication error to engine stop and start ECU
DTC DETECTION CONDITION	Under the following condition, the TCM cannot receive the signal from engine stop and start ECU: Battery voltage is 10 V or more.
FAIL-SAFE OPERATION	Inhibits direct mode.
TROUBLE AREA	CAN communication line malfunction between TCM and engine stop and start ECU TCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable