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Home >> Mazda >> 2023 >> MX-5 Miata Club >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> On-Board Diagnostic - Start Stop Unit >> DTC B13C3-04: LF Control Unit Internal Malfunction [Start Stop Unit] >> Notes

DTC B13C3-04: LF Control Unit Internal Malfunction [Start Stop Unit]: Notes

DTC B13C3:04 (START STOP UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

Description LF control unit internal malfunction
Detection condition
  • Start stop unit detects the LF control unit internal malfunction.
Fail-safe
  • Inhibits the door lock/unlock control using the advanced keyless entry system.
Possible cause
  • LF control unit internal malfunction
  • Start stop unit malfunction
System wiring diagram Not applicable