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Home >> Mazda >> 2006 >> 6 i, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3) >> DTC P0506 >> Notes

DTC P0506: Notes

DTC P0506 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0506 Idle control system RPM lower than expected
DETECTION CONDITION 
  • Actual idle speed is lower than expected by 100 RPM  for 14 s  , when brake pedal is depressed (brake switch is ON) and steering wheel is held straight ahead (power steering pressure switch is OFF).
    NOTE:
    • If atmospheric pressure is less than 72.3 kPa {542 mmHg, 21.3 inHg}  or intake air temperature is below -10°C {14°F}  , PCM cancels diagnosis of P0506.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.
  • PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTC is stored in PCM memory.
POSSIBLE CAUSE 
  • Electronic throttle control system malfunction
  • Air cleaner element clogged
  • Air intake passage clogged
  • A/C relay control circuit malfunction
  • Generator malfunction
  • Purge solenoid valve malfunction
  • Low engine compression (Over capacity of blow-by gas)
  • PCM malfunction