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DTC P0505: Notes

DETECTION CONDITION AND POSSIBLE CAUSE (DTC P0505)

DTC P0505 Idle speed control system problem
DETECTION CONDITION 
  • The PCM cannot control idle speed toward target idle speed while KOER self test.
POSSIBLE CAUSE 
  • Drive-by-wire control system malfunction
  • Air cleaner element clogged
  • Air intake passage clogged
  • A/C relay control circuit malfunction
  • Generator control circuit malfunction
  • Low engine compression (Over capacity of blow-by gas)
  • PCM malfunction