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Home >> Mazda >> 2010 >> 5 Sport, 2.3 L, Standard >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3] >> DTC P0505 >> Notes
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DTC P0505: Notes

DTC P0505 [L3] DETECTION CONDITIONS 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 
  • Monitors only the KOEO self-test.
  • The MIL does not illuminate.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is not available.
  • The DTC is not stored in the PCM memory.
POSSIBLE CAUSE 
  • A/C relay control circuit malfunction
  • Generator control circuit malfunction
  • Air cleaner element clogged
  • Air intake passage clogged
  • Low engine compression (Over capacity of blow-by gas)
  • PCM malfunction
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