p 0505 code

[jugdish35]

check engine light came on ,so i put a code reader on it and it was p0505 . engine idle malfunction,,, any ideas where to start .. runs good idles a little low 600ish rpm.. 2003 grand cherokee, 4.0 91000 miles .. any help is appreciated ...

 

[SteelHeadz]

P0505 - Idle air control motor circuits. This DTC is set when PCM senses a short to ground or battery voltage on any of the four IAC driver circuits for 100ms while the IAC motor is active. Check the harness and connectors from the IAC to the PCM for chaffing / Rubthrough wires or poor connections.