DTC U0001-88: High Speed CAN Communication Bus bus off; DTC U0100-00: Lost Communication With ECM/PCM "A"; DTC U0121-00: Lost Communication With Anti-Lock Brake System (ABS) Control Module; DTC U0155-00: Lost Communication With Instrument Panel Cluster (IPC) Control Module; DTC U0214-00: Lost Communication With Remote Function Actuation [07/2015 - ]: Contents

DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Memory	Fail-safe Operation	Note
U0001-88	High Speed CAN Communication Bus bus off	CAN communication: module communication error	Power steering malfunction indicator light: Not illuminate	DTC Stored	Applicable EPS motor current control: Control enabled	Drive cycle: Not applicable Self test type: CMDTC self test
U0100-00	Lost Communication With ECM/PCM "A"	CAN communication: communication error to ECM	Power steering malfunction indicator light: Illuminates	DTC Stored	Applicable EPS motor current control: Control is maintained by gradually changing the controlled vehicle speed and setting it to specified speed	Drive cycle: Not applicable Self test type: CMDTC self test
U0121-00	Lost Communication With Anti-Lock Brake System (ABS) Control Module	CAN communication: communication error to brake actuator	Power steering malfunction indicator light: Not illuminate	DTC Stored	Applicable EPS motor current control: Control enabled	Drive cycle: Not applicable Self test type: CMDTC self test
U0155-00	Lost Communication With Instrument Panel Cluster (IPC) Control Module	CAN communication: communication error to combination meter	Power steering malfunction indicator light: Not illuminate	DTC Stored	Applicable EPS motor current control: Control enabled	Drive cycle: Not applicable Self test type: CMDTC self test
U0214-00	Lost Communication With Remote Function Actuation	CAN communication: communication error to engine stop and start ECU	Power steering malfunction indicator light: Not illuminate	DTC Stored	Applicable EPS motor current control: Control enabled	Drive cycle: Not applicable Self test type: CMDTC self test

DTC Detection Condition	U0001-88 (CAN communication: module communication error) Error detected in CAN bus communication line with CAN connection modules U0100-00 (CAN communication: communication error to ECM) Communication error to ECM is detected in CAN communication U0121-00 (CAN communication: communication error to brake actuator) Communication error to brake actuator is detected in CAN communication U0155-00 (CAN communication: communication error to combination meter) Communication error to combination meter is detected in CAN communication U0214-00 (CAN communication: communication error to engine stop and start ECU) Communication error to engine stop and start ECU is detected in CAN communication
Fail-safe Operation	U0001-88 Power steering malfunction indicator light does not Illuminate EPS motor current control enabled U0100-00 Power steering malfunction indicator light Illuminates EPS motor current control is maintained by gradually changing the controlled vehicle speed and setting it to specified speed U0121-00, U0155-00, U0214-00 Power steering malfunction indicator light does not Illuminate EPS motor current control enabled
Trouble Area	CAN communication line malfunction CAN communication line malfunction with ECM CAN communication line malfunction with brake actuator CAN communication line malfunction with combination meter CAN communication line malfunction with engine stop and start ECU Poor connection at each connector