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Home >> Mazda >> 2016 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (4 Of 4) >> DTC U0074-00: Can System Communication Error >> Notes

DTC U0074-00: Can System Communication Error: Notes

DTC U0074:00 CAN system communication error (local CAN between PCM and TCM)
DETECTION CONDITION 
  • Malfunction in CAN bus communication line.

    Diagnostic support note 

  • This is a continuous monitor (other).
  • The check engine light does not illuminate.
  • FREEZE FRAME DATA is not available.
  • Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION  Not applicable
POSSIBLE CAUSE 
  • CAN communication line malfunction between PCM and TCM (local CAN between PCM and TCM)
    • TCM terminal 1AI-PCM terminal 1A
    • TCM terminal 1AE-PCM terminal 1B
  • TCM DTC is stored.
  • PCM malfunction
  • TCM malfunction
G10951336