DTC U0001-88; U0010-88; U0100-00; U0101; U0104; U0121; U0128; U0131; U0140; U0142; U0151; U0156; U0182; U0214; U0232; U0235; U023A; Module Communication Errors: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DESCRIPTION & POSSIBLE CAUSES

Description	U0001:88 U0010:88 Module communication error (MS-CAN) U0100:00 Communication error with PCM U0101:00 Communication error with TCM U0104:00 Communication error with radar unit U0121:00 Communication error with DSC HU/CM U0128:00 Communication error with electric parking brake control module U0131:00 Communication error with EPS control module U0140:00 Communication error with front body control module (FBCM) U0142:00 Communication error with rear body control module (RBCM) U0151:00 Communication error with SAS control module U0156:00 Communication error with connectivity master unit (CMU) U0182:00 Communication error with AFS control module U0214:00 Communication error with start stop unit U0232:00 Communication error with BSM control module (LH) U0235:00 Communication error with forward sensing camera (FSC) U023A:00 Communication error with forward sensing camera (FSC)
Detection condition	U0001:88 Instrument cluster detects a CAN bus communication line (HS-CAN) malfunction. U0010:88 Instrument cluster detects a CAN bus communication line (MS-CAN) malfunction. U0100:00 Instrument cluster cannot receive the CAN signal from the PCM. U0101:00 Instrument cluster cannot receive the CAN signal from the TCM for 1 s or more. U0104:00 Instrument cluster cannot receive the CAN signal from the radar unit for 1 s or more. U0121:00 Instrument cluster cannot receive the CAN signal from the DSC HU/CM for 1 s or more. U0128:00 Instrument cluster cannot receive the CAN signal from the electric parking brake control module for 1 s or more. U0131:00 Instrument cluster cannot receive the CAN signal from the EPS control module for 1 s or more. U0140:00 Instrument cluster cannot receive the CAN signal from the front body control module (FBCM) for 5 s or more. U0142:00 Instrument cluster cannot receive the CAN signal from the rear body control module (RBCM) for 5 s or more. U0151:00 Instrument cluster cannot receive the CAN signal from the SAS control module for 2 s or more. U0156:00 Instrument cluster cannot receive the CAN signal from the connectivity master unit (CMU) for 5 s or more. U0182:00 Instrument cluster cannot receive the CAN signal from the AFS control module for 5 s or more. U0214:00 Instrument cluster cannot receive the CAN signal from the start stop unit for 5 s or more. U0232:00 Instrument cluster cannot receive the CAN signal from the BSM control module (LH) for 1.5 s or more. U0235:00 Instrument cluster cannot receive the CAN signal from the forward sensing camera (FSC) for 1 s or more. U023A:00 Instrument cluster cannot receive the CAN signal from the forward sensing camera (FSC) for 1 s or more.
Fail-safe function	U0001:88 Not applicable U0010:88 Not applicable U0100:00 Not applicable U0101:00 Not applicable U0104:00 Not applicable U0121:00 Not applicable U0128:00 Not applicable U0131:00 Not applicable U0140:00 Not applicable U0142:00 Not applicable U0151:00 Not applicable U0156:00 Not applicable U0182:00 Not applicable U0214:00 Not applicable U0232:00 Not applicable U0235:00 Inhibits the smart city brake support control. Warning message related to the smart city brake support is displayed in the center display. U023A:00 Not applicable
Possible cause	Malfunction in CAN bus communication line Malfunction in CAN line between PCM and instrument cluster Malfunction in CAN line between TCM and instrument cluster Malfunction in CAN line between radar unit and instrument cluster Malfunction in CAN line between DSC HU/CM and instrument cluster Malfunction in CAN line between electric parking brake control module and instrument cluster Malfunction in CAN line between EPS control module and instrument cluster Malfunction in CAN line between front body control module (FBCM) and instrument cluster Malfunction in CAN line between rear body control module (RBCM) and instrument cluster Malfunction in CAN line between SAS control module and instrument cluster Malfunction in CAN line between connectivity master unit (CMU) and instrument cluster Malfunction in CAN line between AFS control module and instrument cluster Malfunction in CAN line between start stop unit and instrument cluster Malfunction in CAN line between BSM control module (LH) and instrument cluster Malfunction in CAN line between forward sensing camera (FSC) and instrument cluster
System wiring diagram	Not applicable