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Home >> Mazda >> 2020 >> CX-3 FWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> On-Board Diagnostic - Active Driving Display >> DTC U0001-88/U0100-00/U0101-00/U0104-00/U0155-00/U0156-00/U0235-00/U023A-00: Communication Error (Active Driving Display) >> Notes

DTC U0001-88/U0100-00/U0101-00/U0104-00/U0155-00/U0156-00/U0235-00/U023A-00: Communication Error (Active Driving Display): Notes

DTC U0001:88/U0100:00/U0101:00/U0104:00/U0155:00/U0156:00/U0235:00/U023A:00 (ACTIVE DRIVING DISPLAY) DETECTION CONDITION AND POSSIBLE CAUSE

Description
  • U0001:88
    • Module communication error (HS-CAN)
  • U0100:00
    • Communication error with PCM
  • U0101:00
    • Communication error with TCM
  • U0104:00
    • Communication error with radar unit
  • U0155:00
    • Communication error with instrument cluster
  • U0156:00
    • Communication error with connectivity master unit (CMU)
  • U0235:00
    • Communication error with forward sensing camera (FSC)
  • U023A:00
    • Communication error with forward sensing camera (FSC)
Detection condition
  • U0001:88
    • Active driving display detects a CAN bus communication line (HS-CAN) malfunction.
  • U0100:00
    • Active driving display cannot receive the CAN signal from the PCM.
  • U0101:00
    • Active driving display cannot receive the CAN signal from the TCM for 1 s or more.
  • U0104:00
    • Active driving display cannot receive the CAN signal from the radar unit for 1 s or more.
  • U0155:00
    • Active driving display cannot receive the CAN signal from the instrument cluster.
  • U0156:00
    • Active driving display cannot receive the CAN signal from the connectivity master unit (CMU).
  • U0235:00
    • Active driving display cannot receive the CAN signal from the forward sensing camera (FSC) for 1 s or more.
  • U023A:00
    • Active driving display cannot receive the CAN signal from the forward sensing camera (FSC) for 1 s or more.
Fail-safe
  • U0001:88
    • Not applicable
  • U0100:00
    • Not applicable
  • U0101:00
    • Not applicable
  • U0104:00
    • Not applicable
  • U0155:00
    • Not applicable
  • U0156:00
    • 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. (with center display)
  • U023A:00
    • Not applicable
Possible cause
  • Malfunction in CAN bus communication line
  • Malfunction in CAN line between PCM and active driving display
  • Malfunction in CAN line between TCM and active driving display
  • Malfunction in CAN line between radar unit and active driving display
  • Malfunction in CAN line between connectivity master unit (CMU) and active driving display
  • Malfunction in CAN line between instrument cluster and active driving display
  • Malfunction in CAN line between forward sensing camera (FSC) and active driving display
System wiring diagram Not applicable
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