DTC U0001-88; U0100-00; U0101-00; U0121-00; U0121-87; /U0131-00; U0140-00; U014 6-00; U0151-00; U0155-00: Module Communication Error: Notes

Description	U0001:88 Module communication error (HS-CAN) U0100:00 Communication error with PCM U0101:00 Communication error with TCM U0121:00 Communication error with DSC HU/CM U0121:87 Communication error with DSC HU/CM U0131:00 Communication error with EPS control module U0140:00 Communication error with front body control module (FBCM) U0146:00 Communication error with instrument cluster U0151:00 Communication error with SAS control module U0155:00 Communication error with instrument cluster
Detection condition	U0001:88 Start stop unit detects the CAN bus communication line (HS-CAN) malfunction 10 times continuously. U0100:00 Start stop unit could not receive the CAN signal from the PCM for 1 s or more. U0101:00 Start stop unit could not receive the CAN signal from the TCM for 1 s or more. U0121:00 Start stop unit could not receive the CAN signal from the DSC HU/CM for 1 s or more. U0121:87 Start stop unit could not receive the CAN signal from the DSC HU/CM for 10 s or more. U0131:00 Start stop unit could not receive the CAN signal from the EPS control module for 1.2 s or more. U0140:00 Start stop unit could not receive the CAN signal from the front body control module (FBCM) for 5 s or more. U0146:00 Start stop unit cannot receive the CAN signals from the instrument cluster for 5 s or more. U0151:00 Start stop unit could not receive the CAN signal from the SAS control module for 1 s or more. U0155:00 Start stop unit could not receive the CAN signal from the instrument cluster for 5 s or more.
Fail-safe function	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.
Possible cause	Malfunction in CAN bus communication line Malfunction in CAN line between PCM and start stop unit Malfunction in CAN line between TCM and start stop unit Malfunction in CAN line between DSC HU/CM and start stop unit Malfunction in CAN line between EPS control module and start stop unit Malfunction in CAN line between front body control module (FBCM) and start stop unit Malfunction in CAN line between instrument cluster and start stop unit Malfunction in CAN line between SAS control module and start stop unit
System wiring diagram	Not applicable