LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2007 >> RX-8 Touring, 1.3 3 >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic (Engine Control System) 13BMSP >> DTC P0505 >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0505: Notes

DTC P0505 DETECTION & CONDITION POSSIBLE CAUSES

DTC P0505 Idle air control system problem
DETECTION CONDITION 
  • The PCM cannot control idle speed at the target idle speed during the KOER self-test.

Diagnostic support note 
  • The MIL does not illuminate.
  • PENDING CODE is not available.
  • FREEZE FRAME DATA is not available.
  • The DTC is not stored in the PCM memory.
POSSIBLE CAUSE 
  • Drive-by-wire control system malfunction
  • A/C cut-off control malfunction
  • Generator control system malfunction
  • Intake-air line clogged
    • Air cleaner clogged
    • Throttle body clogged
  • Insufficient compression
    • Engine oil malfunction
    • Oil pressure decrease
    • Metering oil pump malfunction
    • Metering oil pump control malfunction
    • Engine malfunction
  • Fuel line pressure malfunction
  • PCM malfunction