DTC P0505:00 [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSES

DTC P0505:00	IAC system problem
DETECTION CONDITION	The PCM cannot control idle speed toward target idle speed while KOER self test. Diagnostic support note This is an continuous monitor (other) The MIL does not illuminate. FREEZE FRAME DATA is not available. The DTC is not stored in the PCM memory
POSSIBLE CAUSE	A/C magnetic clutch malfunction Generator control circuit malfunction Air cleaner element clogged Throttle body passage clogged Insufficient engine compression (over capacity of blow-by gas) PCM malfunction

DTC P0505:00

IAC system problem

DETECTION CONDITION

The PCM cannot control idle speed toward target idle speed while KOER self test.

Diagnostic support note

This is an continuous monitor (other)
The MIL does not illuminate.
FREEZE FRAME DATA is not available.
The DTC is not stored in the PCM memory

POSSIBLE CAUSE

A/C magnetic clutch malfunction
Generator control circuit malfunction
Air cleaner element clogged
Throttle body passage clogged
Insufficient engine compression (over capacity of blow-by gas)
PCM malfunction