P1506 FORD - Idle Air Control Overspeed Error
- Faulty Idle Air Control (IAC) valve
- IAC valve harness is open or shorted
- IAC valve circuit poor electrical connection
- Intake leaks
- Stuck PCV Valve
Also, check for intake leaks or stuck PCV Valve.
If the problem persistss, the IAC valve may need to be replaced.
User Submitted Video
When is the code detected?
- Engine Light ON (or Service Engine Soon Warning Light)
P1506 Ford Description
The Idle Air Control Valve (IACV) valve assembly controls the engine idle speed and provides a dashpot function. The IAC valve assembly meters intake air around the throttle plate through a bypass within the IAC valve assembly and throttle body. The Powertrain Control Module (PCM) determines the desired idle speed or bypass air and signals the IAC valve assembly through a specified duty cycle. The IAC valve responds by positioning the IAC valve to control the amount of bypassed air. The PCM monitors engine RPM and increases or decreases the IAC duty cycle in order to achieve the desired RPM.
P1506 Ford Information for specific Ford models
P1506 1998 FORD F150
P1506 1999 FORD F150
P1506 2000 FORD F150
P1506 2001 FORD F150
P1506 2002 FORD F150
P1506 2003 FORD F150
P1506 2006 FORD FUSION
P1506 2007 FORD FUSION
P1506 2008 FORD FUSION
P1506 2009 FORD FUSION
P1506 2010 FORD FUSION
P1506 2011 FORD FUSION
P1506 2012 FORD FUSION