P1157 Manufacturer control fuel air metering

P0134 o2 sensor ckt no activity(bank 1 sensor 1)

Not sure what these codes are but i am running a KRRH with an angled defouler anybody have any ideas. Car is 03 ep3.

 

defouler prolly isnt working...it doesnt work on all cars....dunno about that other one!

 

Ive had the race header and defouler on for 6 months never had a problem til now

 

I hate OBD2, thank God for snapon.

 

ok, so change your o2 sensor...

 

you cooked it....the cat takes up a lot of the heat from the exhost, remove it and you have a blast firance that the #2 O2 sensor is not designed to live in.....defoulers help but heat is heat.

 

Ok thanks guys

 

I just got my car diagnosed and I THINK it said P0134 also. The guy couldn't figure out what it meant but since my engine light turned off they assumed it was a fluke. My boyfriend had suggested it was a misfire thing. What you can do is reset the light and if it comes on again, it will be your O2 sensor.