ok so a week ago my CEL came on and my inspection was due in November. I got the code pulled and it turned out to be a Bank 1 rear o2 sensor (P0159). Fine. I replaced it and the CEL went away. I drove the car around for a day or so before getting it inspected again and the CEL came back on again! This time it was the Bank 2 rear o2 sensor (P0138 along with a bunch of other rear o2 sensor related codes). Ok so i change that POS as well. I pass inspection thank God! but my macho sadistic car wasn't done yet.....apart from the front tire getting busted from the side (completely unrelated) a p0430 (bank 2 pre-cat crapping out) code popped up.

I am not sure what to do now

I think there is a TSB out there for bad rear o2 sensors. If i get the car flashed, would that help eliminate the issue?
I was also planning on replacing the MAF sensor before getting the car flashed....should i?


side note: before the p0430 code came, i put some STP fuel injector cleaner in the gas tank.......would that have anything to do with it?

 

Bad 02s will put cats out of their miseries, that's for sure.
No, don't replace the MAF until it goes bad.
You could check the dealer for the latest update for a reflash for your ECU, but it wont change the fact that you need a new cat.

Cliffs: Here is a link to some direct fit cats if you are interested.

http://www.discountconverter.com/dir...&CylSelected=6

 

what he said ^^^^^^^^^^^^^


I wonder how much longer before my GTP won't pass Inspection LOL

 

You got strict laws in your parts?

 

I thought I read somewhere that you should change both 02 sensors at the same time?

 

That is the rule of thumb.

 

lol @ that converter site. The spec'd cats are all "calif emissions" and then "except cars registered in calif". CA wont even let you buy CA spec cats anymore

 

yeah....****in' ny

 

It is for those non CA vehicles

 

$200 for a precat?

r there aftermarkets y-pipes for 01 cali spec maximas that get rid of the B2 precat?