DTC P0506:00: Notes

DTC P0506:00	IAC system RPM lower than expected
DETECTION CONDITION	The actual idle speed is lower than expected by 100 rpm for 14 s when the brake pedal is depressed (brake switch is on). NOTE: If the atmospheric pressure is less than 72.2 kPa {542 mmHg, 21.3 inHg} or the intake air temperature is below -10 °C {14 °F} , the PCM cancels the diagnosis of DTC P0506:00. Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction condition 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 (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	A/C relay control circuit malfunction Electronic throttle control system related sensor malfunction APP sensor malfunction TP sensor malfunction Purge solenoid valve malfunction Air cleaner element restricted Throttle body passage blockage Engine malfunction Insufficient engine compression (over capacity of blow-by gas) Poor quality fuel Generator malfunction PCM malfunction

DTC P0506:00

IAC system RPM lower than expected

DETECTION CONDITION

The actual idle speed is lower than expected by 100 rpm for 14 s when the brake pedal is depressed (brake switch is on).

NOTE:

If the atmospheric pressure is less than 72.2 kPa {542 mmHg, 21.3 inHg} or the intake air temperature is below -10 °C {14 °F} , the PCM cancels the diagnosis of DTC P0506:00.
Diagnostic support note
This is a continuous monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition 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 (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

A/C relay control circuit malfunction
Electronic throttle control system related sensor malfunction
- APP sensor malfunction
- TP sensor malfunction
Purge solenoid valve malfunction
Air cleaner element restricted
Throttle body passage blockage
Engine malfunction
- Insufficient engine compression (over capacity of blow-by gas)
- Poor quality fuel
Generator malfunction
PCM malfunction