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Home >> Mazda >> 2006 >> 6 Mazdaspeed >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (On-Board Diagnostic [Engine Control System L3)) >> DTC P0505 >> Notes
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DTC P0505: Notes

WARNING: This page is about a different variant/trim than selected.
DTC P0505 DETECTION CONDITION AND POSSIBLE CAUSES

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