[bawxcar]

I don't know if this helps but my neighbours '04 Nissan Sentra SE-R doesn't have the o2 sensors in the right place, so it flags a code. He went twice to get it tested and cleared it twice beforehand but it kept coming up. Long story short, he got a conditional pass, as he would have to pay over $450 to get everything fixed. Which is classified as a legal emission test. (somehow) I don't know exactly how it works.. I can talk to him next week as he's gone away for work to see if I can get more info from him if you're interested in trying to go that route. (this is from Shelburne, Ontario -Shelburne auto Center )