2000SLPZ28

the car is a 2000 camaro z28. i have put on full custom exhaust with long tube headers. i have been fighting two codes, i did have more but i replaced one of the o2 sensors. i have a diablo sport tuner that reads the codes and resets them. every time i reset them, the next time the engine runs a cycle it throws the same codes... here they are according to the tuner.

P0161 O2S heater circuit, Bank 2- sensor 2 malfunction.

P1153 HO2S Bank 2 sensor 1. insufficient switching.

if someone could tell me what these codes mean, and how to fix them i would be forever greatfull. my state has passed an emissions test to take and i cant pass it with this going on. thank you for any comments that you could give me!

2000SLPZ28

ttt..............

mvvette97

iTrader: (18)

do you have an exhaust leak on that side? That could cause it. Or maybe some burnt wires for the headers.

2000SLPZ28

i doubt that i have an exhuast leak becuase i had everything wielded. i dont think one of the wires is burnt but i will check today. does anybody else know exactly what the code means?

2001NBMZ28

You can look them up at gearchatter.com but it assumes your stock. Did you delete the cats - running sims - which 02 did you replace?

2000SLPZ28

i still have the cats on it, thier bran new. im running stock o2's atcept for the bank 1 sensor 1, which is the one on the driver side before the cat.

mvvette97

iTrader: (18)

This is just a thought but what brand of sensor did you get? I went through 3 of the Bosh on my vette at the local Napa and finally gave up and ordered some from GM Parts Direct. After that I never had a problem

2000SLPZ28

i only replaced one with a bosh. the others are stock. i dont get a code off of that o2 but could it throw off the others?

mvvette97

iTrader: (18)

I was thinking, since you have a P1153 bank 2 sensor 1 , well that code usually means that the sensor is bad. Since that one is in front it could cause the rear one to malfunction, just like the code says. i would replace the front on the bank 2 and i bet it will take care of the problem

2000SLPZ28

makes some since. ill try it. thanx. and will keep you posted

mvvette97

iTrader: (18)

good luck, hope it works

lito

had the same prob. i did most of what you've done plus more. all in all..it was the secondary air injection tha was the culprit,the; (air pump)! no more codes. check the air pump. let us know the result

2000SLPZ28

where is the airpump, and how much was it?

warp_6

iTrader: (2)

The p0161 rear o2 bank 2 heater is bad, as long as the wires are ok. Most likely they are, heaters go bad often. The p1153 front 02 bank 2 sounds like it's lazy. You should relace it also. I like to use factory parts but you said you repaced the other front sensor already with a bosh? If you haven't had any codes pop up for that sensor you might want to put a bosh on the other side aswell.
All 4 of mine went bad after I put my longs on. One at a time. Good luck.

2000SLPZ28

well i put two new O2 sensers in bank one and two, and erased the codes with my diablo, and it seems to have done the trick. i took it today to get the emissions test done and it passed with flying colors. i just wanna say thanks for all the help and hopefully i can get it tuned now