My CEL came on about 2 months ago, the code is 14, which is primary oxygen sensor. I replaced it twice already and it's still giving me problems. The car was idling up and down all the time. Also, I believe the car is on limp mode because vtec is not kicking in and it won't rev over 6500 rpm. I found one of the problems, it was a vacuum leak, the throttle body gasket was broken, and it stopped doing the idling thing. but now it does it sometimes, I still havent been able to find another leak. so please help. I wanted to take it to the Honda dealer an hour away from where I live but they were gonna charge me $90 dollars just to plug it to the computer, when I can check the codes myself.

Thank you