Possible causes
– IACV-AAC valve harness is open or shorted
– IACV-AAC valve poor electrical connection
– Faulty IACV-AAC valve
– IACV-AAC valve poor electrical connection
– Faulty IACV-AAC valve
Tech description
There is a factory service bulletin for the following Ford Models:
2005-2007 Ford Crown Victoria
2006 Ford Mustang, Mustang
2004-2006 Ford F-150
2005-2006 Ford E-350, Ford E-450, Ford F-Super Duty
2006-2007 Ford Explorer Sport Trac, Ford Explorer
Ford Factory Service Bulletin OBDII Code P0505
When is the obd code mean?
The P0505 code is set when the IACV-AAC valve does not operate properly.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Engine hard to start
– Rough or erratic idle speed
– Engine hard to start
– Rough or erratic idle speed
P0505 FORD OBD Code Description