I have an 03 350z,110,000 miles, the issue I'm having is Idle Control System RPM Higher than Expected. Engine code P0507, It seems like it drives fine. But the RPMs do seem slightly higher when driving. Any known causes of this or fixes?

 

by rpm is higher what do you mean? auto or manual? any mods? more info is needed

 

Nismo air intake and Nismo exhaust, nothing high tech. Normally when I'm just cruising at like 50mph it's steady around 2000 rpm, no its around 3000. It's auto.

 

last time fluids were changed?

 

Oil change at 109,000 miles, and I'm not sure about any other fluids. I bought it at 108,000 miles.

 

change the tranny fluid and go from there

 

ok thanks