Possible causes
– Dirty throttle body
– Electric throttle control actuator misadjusted or damaged
– Faulty Electric throttle control actuator
– Intake air leak
– Poor electrical connection to the Intake Air Control (IAC) valve
– Electric throttle control actuator misadjusted or damaged
– Faulty Electric throttle control actuator
– Intake air leak
– Poor electrical connection to the Intake Air Control (IAC) valve
Tech description
If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you may have to replaced the Electric Throttle Control Actuator (Motor) to repair the problem.
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
2005-2006 Ford E-450
2005-2006 Ford F-Super Duty
2006-2007 Ford Explorer Sport Trac
2006-2007 Ford Explorer
Ford Factory Service Bulletin OBDII Code P0506
When is the obd code mean?
The idle speed is less than the target idle speed by 100 rpm or more.
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
P0506 FORD OBD Code Description