I have a check advance trac, and check suspension codes. I replaced compressor, on 2006 Ford Expedition

relays, fuses are good. Out of options, any ideas?

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1 answer 5 comments
I haven't taken it to an autozone was scared of messing up the suspension air bags. do u think it would b ok? it's only 2 miles away
yes drive slow and miss bumps
thanks will do and get back to ya when i have them. well I took it up there received only 1 code P2197- says definition- lack of heated oxygen sensor - Bank 2 sensor. H02S21 switch- sensor indicates lean explanation. aaECM tried to correct for a lean condition-ECM made. Probable cause- Failed H02S21 ( Bank 2 sensor 1), open or short circuit condition, failed fuel pump or blocked fuel filter, MAF sensor failure, vacuum leak. He said that it wouldn't give any codes for the air suspension that it was just a on and off switch. My model is equipped with the Message Center & the on and off switch if that helps.
does it cost?thanks for all your help, i'm checking. how do u get to it?
I Really appreciate all the help. Come to find out it was the Driver side air suspension Sensor wasn't connected! Wow!! It's Rolling like Silk!