Idle air control and a bunch of O2 errors

[Peanut74]

I recently had to do some head work on my Ex. Got that all done and put it back to together and got it running. After it ran a bit the check engine light came on. When I had the codes read I had a "Idle air control over speed error" and a bunch of O2 errors for both banks. I looked everything over to make sure I had connected all the wires and did not find anything not connected.

I did not have these code errors before I took everything apart to fix the head. Anybody have any idea where I should begin looking. Thanks

 

[pcam13]

What are the o2 errors. I have only ever seen the IAC over speed when they go bad or have some impressive crap built up inside the housing... But because you have multiple errors check for melted wires.

FYI: For who don't know... IAC over speed simply means the PCM sees the factory idle speed is outside its set parameters.

 

[Peanut74]

Well here are the error codes that came up:
P1506 Idle air control over speed error
The O2 errors are P0135, P0153, P0155 and P0171