DTC P0506:00 [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 P0506:00	Idle air control system RPM lower than expected
DETECTION CONDITION	The 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}, the PCM cancels diagnosis of P0506:00. Diagnostic support note This is a continuous monitor (CCM) The MIL illuminates if the PCM detects the above malfunction conditions in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA is available The DTC is stored in the PCM memory.
POSSIBLE CAUSE	A/C magnetic clutch malfunction Electronic throttle control system malfunction Purge solenoid valve malfunction Air cleaner element clogged Air intake passage clogged Throttle body passage clogged Generator malfunction Engine malfunction Insufficient engine compression (over capacity of blow-by gas) Poor quality fuel PCM malfunction

DTC P0506:00

Idle air control system RPM lower than expected

DETECTION CONDITION

The 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}, the PCM cancels diagnosis of P0506:00.

Diagnostic support note

This is a continuous monitor (CCM)
The MIL illuminates if the PCM detects the above malfunction conditions in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
FREEZE FRAME DATA is available
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

A/C magnetic clutch malfunction
Electronic throttle control system malfunction
Purge solenoid valve malfunction
Air cleaner element clogged
Air intake passage clogged
Throttle body passage clogged
Generator malfunction
Engine malfunction
- Insufficient engine compression (over capacity of blow-by gas)
- Poor quality fuel
PCM malfunction