Well I managed to borrow a MAF from Ira to fix my MAF
problems, swapped back to the stock y-pipe with cats,
and cleared the codes. I drove around for about 2
days without any codes and everything was great till I
got an intermittant SES light. I got the codes read
and it turns out to be P0154 and P0160.

P0154 - HO2S Circuit Insuff. Activity Bank 2 Sensor 1
P0160 - HO2S Circuit Insuff. Activity Bank 2 Sensor 2

I cleared the codes today and they have not come
back...but I highly doubt my stock cats are dead at
60K...actual mileage is 72K but I've been running the
off road y-pipe with o2 simms for a year now.

Are the o2 sensors taking a dump or the cats REALLY
going bad?

I just cleared the codes today, can I get my car
smogged tomorrow before the light comes back on?

-B

 

That is both sensors on the passenger side. I would take a look at your wiring to make sure everything is solid and making good connection.

 

clean the wires and check the connections, may be a wire. nothing to worry about, on our cars if the sensors dont warm up in time going f to the cats it throws a code, just give it time. and if does it again check cats or replace.. yes you can get the car checked but they will know a code has been cleared because it will read back no reading on o2s lol but he has to pass you no check engine light thats an a in my book, as long there is no codes your good..

 

Where would I look for the connections?

-B

 

just route the wire and see where it leads to disc,and clean.