I have a SES light that just turned on last week, The code is P0155. I was wondering what caused this and what I need to do to fix it?

 

HO2S Heater Performance Bank 2 Sensor 1

How long ago did you put those Pacesetter LT's on. The code is telling you that the heater part of your O2 is not performing correctly. Your headers are causing a cooler exhaust stream so the O2 is not within it's specs.

It's not hurting anything...you can tune it out, put rear corvette o2's(Bosch 13111 I believe, don't quote me) in...they have hotter heaters, replace your O2's (sensor one could actually be bad...doubt it)...I tuned mine out.

 

I have had the Pacesetter's installed for about 5 months. Would this be the Front o2's or the Rear o2's? I had Jesse delete the Rear o2 sensors so I suppose it is the Fronts, Duh. Do you have a part number for the Vette o2 sensors? Thanks for your help.

 

I have been looking for o2s too. The vette 02 would plug right in, right? How about running the vette o2s on stock manifolds?

 

Bank2 Sensor1 = Passenger side front O2. Check and make sure that none of the wires are pulled out of the connector, if they're OK, the sensor heater element probably took a dump.

 

Now that I re-read this...the heater probably did take a dump. Nevertheless, replace them with Bosch p/n 13111 (vette rear o2's). I never put them on mine, so I don't know if they are plug and play. Do a search on ls1tech or here. Should find something.

 

you guys have the 2000 models so this may not apply, but i thought mine were getting a little flaky and changed them out for the 13111's and my truck did not like that. compared to my factory o2s the 13111's were seriously lazy and slow. in fact one night last about a week and a half ago i went to a buddies house, it had been raining and was about 58*, and one of the o2s got cold flat-lined rich and pretty much went to sleep. i could only keep it awake by keeping the rpms up around 2000 or more. OD 45-50mph it would go right to sleep. anyway swapped them back for the stockers and everything is fine. not trying to talk you out of putting them in, just wanted to give you my experience with them, but mine is an 04 and that may be the difference.