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DTC P0505: Notes

DTC P0505 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0505 IAC system problem
DETECTION CONDITION 
  • The PCM cannot control idle speed toward target idle speed while KOER self test.

    • Diagnostic support note 

  • This is a continuous monitor (CCM).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • 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
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