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Home >> Mazda >> 2017 >> CX-3 Touring, AWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (4 Of 5) >> DTC U0338-00; Start Stop Unit Error >> Notes
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DTC U0338-00; Start Stop Unit Error: Notes

DTC U0338-00; START STOP UNIT ERROR - DETECTION CONDITION & POSSIBLE CAUSE

DTC U0338:00 Start stop unit error
DETECTION CONDITION
  • When any of the following conditions is met:
    • CAN communication line malfunction between start stop unit and PCM
      • Start stop unit internal malfunction

    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 drive error (start stop unit or PCM)
  • CAN communication line malfunction between start stop unit and PCM
    • Start stop unit terminal 2M-BCM terminal 2D
    • Start stop unit terminal 2O-BCM terminal 2C
    • BCM terminal 3C-PCM terminal 2AK
      • BCM terminal 3D-PCM terminal 2AL
  • Start stop unit connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Start stop unit malfunction
  • PCM malfunction
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