Trouble Codes

[TransAmFanatic]

hey guys i went to the local autozone to c why my SES light is on. the guy hooked up the computer, and was shocked that i was throwing 6 codes.

one code is the EGR code, im not worried about it, because i removed the EGR from the car completly, so im not gonna list it.

here are the codes.
p1153
p0300
p0154
p0155
p0157

the moron couldnt tell me what they were for, because he was the new guy there and it was his first day.(lucky me)

my question to you guys is can yall help me figure out what these codes mean, and what i gotta do to fix the problems

the performance mods that i have are LT headers, ORY, free ram air mod, flowmaster muffler. and a basic custom computer tune from thunder racing.

[Goldcuffs]

I only recognize the po300, that's a random cylinder misfire. (plugs, wires,injector,cyl too lean, or possible mechanical problem.)
How does it run? can you feel the car running rough?

[TransAmFanatic]

I only recognize the po300, that's a random cylinder misfire. (plugs, wires,injector,cyl too lean, or possible mechanical problem.)
How does it run? can you feel the car running rough?

yeah i can feel the car run rough, but only in the low rpm range, but when im in the higher rpm range it runs perfect.

[2001NBMZ28]

Looks like they're mostly bank 2, sensor 1 02 codes, with the exception of 157.

[TransAmFanatic]

hmm so basically i need to change that 02 sensor...

[Goldcuffs]

hmm so basically i need to change that 02 sensor...

Not necessarily, I'm not sure what the definitions are but if it's showing "O2 lean B2" it could be a vacuum leak or fuel problem. If any of those are "heater circuit failure" then there is a very good chance of a bad O2.

[0rion]

1153- O2 insufficient switching bank 2 sensor 1
300- random misfire
154- insufficient activity bank 2 sensor 1
155- heater performance bank 2 sensor 1
157- low voltage bank 2 sensor 2


what mods do you have? It looks like it could be that passenger side front sensor but if you have headers that would explain a couple of those codes. To narrow it down to that sensor for sure you could swap it with the drivers side and see if the codes follow it over there.

[Goldcuffs]

I would recommend you figure out the misfire first. O2's will not cause a misfire but a misfire will cause O2 codes.

[0rion]

I would recommend you figure out the misfire first. O2's will not cause a misfire but a misfire will cause O2 codes.

I agree with you except that if there are many miles on those O2's I'd swap them anyhow.

[TransAmFanatic]

i have LT headers, ory, free ram air mod, flowmaster muffler, a tune, and a cut out. i replaced the plugs and wires when i done the header swap.