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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> Steering >> Electronic Steering >> On-Board Diagnostic - Steering >> DTC U0001-88; U0100-00; U0121-00; U0126-00; U0155-00; U0214-00; U023A:00; Can System Communication Errors >> Notes

DTC U0001-88; U0100-00; U0121-00; U0126-00; U0155-00; U0214-00; U023A:00; Can System Communication Errors: Notes

DETECTION CONDITION & POSSIBLE CAUSE

DTC U0001:88 CAN system communication error
U0100:00 Communication error to PCM
U0121:00 Communication error to DSC HU/CM
U0126:00 Communication error to SAS control module
U0155:00 Communication error to instrument cluster
U0214:00 Communication error to start stop unit
U023A:00 Communication error to forward sensing camera (FSC)
Detection condition
  • U0001:88
    • Error detected in line between CAN connection module and CAN bus communication line
  • U0100:00
    • Communication error to PCM is detected in CAN communication
  • U0121:00
    • Communication error to DSC CM is detected in CAN communication
  • U0126:00
    • Communication error to SAS control module is detected in CAN communication
  • U0155:00
    • Communication error to instrument cluster is detected in CAN communication
  • U0214:00
    • Communication error to start stop unit is detected in CAN communication
  • U023A:00
    • Communication error to forward sensing camera (FSC) is detected in CAN communication
Fail-safe function
Possible cause
  • CAN system wiring harness open or short circuit with PCM
  • CAN system wiring harness open or short circuit with DSC HU/CM
  • CAN system wiring harness open or short circuit with SAS control module
  • CAN system wiring harness open or short circuit with instrument cluster
  • CAN system wiring harness open or short circuit with start stop unit
  • CAN system wiring harness open or short circuit with forward sensing camera (FSC)
  • Poor connection at connectors
System wiring diagram -