mangus2k1ws6

i have a 01 trans am ws6 with longtube headers and a catted ypipe, it also has a hptuner tune.....this last wednesday i had it inspected for pa inspection and it passed .....but when i picked it up the service engine light was on. i was thinking maybe whatever they did could have thrown it out of wack and maybe a retune co do it......i did hook it up to a obd2 reader and the codes were for a 02 sensor circuit malfunction. please let me know what it could be.

BriancWS6

iTrader: (18)

What bank and sensor was it? What mods do you have?

staringback05

iTrader: (8)

you could simply just have a bad o2

mangus2k1ws6

it threw a po135 code and it said bank 1 sensor 1....but i also had a pending po135 and po155......my mods are just lt headers, catted ypipe, loudmouth1 exhaust, hptuner tune, and pro 5.0 shifter. i do not have a egr on now since i had my headers put on

mangus2k1ws6

how could it go bad after going through inspection?

jam01

first off be glad it just passed inspection. parts go bad, its part of owning cars, especially when you start modifying.

BriancWS6

iTrader: (18)

Bank 1 sensor 1 is the driver side pre-cat. Time for a new one man.

mangus2k1ws6

how much do they usually cost?

BriancWS6

iTrader: (18)

About 50-60 bucks each. I have had good luck with the Bosch ones. I use PN 13111, it's the vette rears, it is longer and doesnt require the extensions that you have to use with longtubes, and it has also been said to have a hotter "heater" in it, so they get to temp faster, which helps when you have longtubes cause the O2s are located further downstream. I would replace them as a pair. Damn what run-on sentence