Argh, this code is so frustrating. I've been chasing for an answer every day since Wednesday. I've been going down the list. I changed the air filter and made sure the box was tight. I've tightened all the hoses. I've cleaned the MAF with MAF cleaner. I've cleaned the IAC valve and replaced the gasket. I've even dropped full price on a front A/F sensor at the dealer. Code still keeps coming back. Car drives perfectly though, and I got about 110 miles at the 3/4 tank mark.
I just bought the car on Wednesday. 0 mods on it.