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DTC P0457:00: Notes

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DTC P0457:00 Evaporative emission system leak detected (fuel cap loose/off)
DETECTION CONDITION 
  • P0457:00 indicates that the initial vacuum could not be achieved after a refueling event and the purge vapor flow is excessive (gross leak).
POSSIBLE CAUSE 
  • Missing or loose fuel filler cap.
  • EVAP system leak
  • PCM malfunction
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