DTC U0001-88: High Speed CAN Communication Bus off; DTC U0100-00: Lost Communication With ECM/PCM "A"; DTC U0101-00: Lost Communication with TCM; DTC U0121-00: Lost Communication With Anti-Lock Brake System (ABS) Control Module; DTC U0121-87: Lost Communication With Anti-Lock Brake System (ABS) Control Module Missing Message; DTC U0131-00: Lost Communication With Power Steering Control Module; DTC U0140-00: Lost Communication With Body Control Module; DTC U0146-00: Lost Communication With Gateway "A"; DTC U0151-00: Lost Communication With Restraints Control Module; DTC U0155-00: Lost Communication With Instrument Panel Cluster (IPC) Control Module [07/2015 - ]: Contents

DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Memory	Fail-safe Operation	Note
U0001-88	High Speed CAN Communication Bus off	Module communication error (HS-CAN)	KEY warning light (red): On Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0100-00	Lost Communication With ECM/PCM "A"	Communication error with ECM	KEY warning light (red): On Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0101-00	Lost Communication with TCM	Communication error with TCM* *: ATX	KEY warning light (red): Not applicable Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0121-00	Lost Communication With Anti-Lock Brake System (ABS) Control Module	Communication error with brake actuator	KEY warning light (red): On Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0121-87	Lost Communication With Anti-Lock Brake System (ABS) Control Module Missing Message	Communication error with brake actuator	KEY warning light (red): On Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0131-00	Lost Communication With Power Steering Control Module	Communication error with power steering ECU	KEY warning light (red): Not applicable Engine switch indicator light (amber): Not applicable	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0140-00	Lost Communication With Body Control Module	Communication error with main body ECU	KEY warning light (red): Not applicable Engine switch indicator light (amber): Not applicable	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0146-00	Lost Communication With Gateway "A"	Communication error with main body ECU	KEY warning light (red): On Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0151-00	Lost Communication With Restraints Control Module	Communication error with center airbag sensor assembly	KEY warning light (red): On Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test
U0155-00	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Communication error with combination meter	KEY warning light (red): On Engine switch indicator light (amber): Flash	DTC stored	Applicable	Drive cycle: Not applicable Self test type: CMDTC self test

DTC Detection Condition	U0001-88 (Module communication error (HS-CAN)) Engine stop and start ECU detects the CAN bus communication line (HS-CAN) malfunction 10 times continuously with the ignition switched ON (engine off or on). U0100-00 (Communication error with ECM) Engine stop and start ECU could not receive the CAN signal from the ECM for 1 s or more with the ignition switched ON (engine off or on). U0101-00 (Communication error with TCM) Engine stop and start ECU could not receive the CAN signal from the TCM for 1 s or more with the ignition switched ON (engine off or on). U0121-00 (Communication error with brake actuator) Engine stop and start ECU could not receive the CAN signal from the brake actuator for 1 s or more with the ignition switched ON (engine off or on). U0121-87 (Communication error with brake actuator) Engine stop and start ECU could not receive the CAN signal from the brake actuator for 10 s or more with the ignition switched off. U0131-00 (Communication error with power steering ECU) Engine stop and start ECU could not receive the CAN signal from the power steering ECU for 1.2 s or more with the ignition switched ON (engine off or on). U0140-00 (Communication error with main body ECU) Engine stop and start ECU could not receive the CAN signal from the main body ECU for 5 s or more with the ignition switched ON (engine off or on). U0146-00 (Communication error with main body ECU) Engine stop and start ECU could not receive the CAN signal from the main body ECU for 5 s or more with the ignition switched ON (engine off or on). U0151-00 (Communication error with center airbag sensor assembly) Engine stop and start ECU could not receive the CAN signal from the center airbag sensor assembly for 1 s or more with the ignition switched ON (engine off or on). U0155-00 (Communication error with combination meter) Engine stop and start ECU could not receive the CAN signal from the combination meter for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe Operation	U0001-88 Sets to default signal. U0100-00 Sets to default signal. U0101-00 Sets to default signal. U0121-00 Sets to default signal. U0121-87 Sets to default signal. U0131-00 Sets to default signal. U0140-00 Sets to default signal. U0146-00 Sets to default signal. U0151-00 Sets to default signal. U0155-00 Sets to default signal.
Trouble Area	Malfunction in CAN bus communication line Malfunction in CAN line between ECM and engine stop and start ECU Malfunction in CAN line between TCM and engine stop and start ECU Malfunction in CAN line between brake actuator and engine stop and start ECU Malfunction in CAN line between power steering ECU and engine stop and start ECU Malfunction in CAN line between main body ECU and engine stop and start ECU Malfunction in CAN line between center airbag sensor assembly and engine stop and start ECU Malfunction in CAN line between combination meter and engine stop and start ECU