Help with oil pressure and codes!!

[Renzo]

So I haven't been able to drive my car due to having leg injury on my left leg so the car sat on my driveway for 3 months (Turning it on every now and then). Before breaking my leg, I knew I had to change the catalytic converter (I was getting that PO420 code), so as soon as I was able to drive my car again, which was last week, I took it to a mechanic and he changed the catalytic converter and the code was gone. A couple of days later though, the light came on again with the codes:

P1133 - HO2S Insufficient Switching Bank 1 Sensor 1
P1153 - HO2S Insufficient Switching Bank 2 Sensor 1

I'm wondering if I need to change these, but the guy at the shop said that it might need to be driven about 100 miles and the light might come off by itself. I only have a 5 mile commute to work and I don't really drive the car anywhere else, so I don't want to wait that long, especially since I have to get my emissions ASAP. Also, my oil pressure gage has been acting really strange lately. Whenever I'm on idle, the oil pressure gage drops all the way to zero, but I don't feel anything different on the car, I would think that if there was no oil pressure then the car would die or something. Whenever I give it a go, the pressure comes back up to the first line, and it'll stay there until I fully stop. Do you guys think it might be the oil pressure sensor that's bad?

Thanks in advance for all the help!

[thebeewantsboost]

Re: Help with oil pressure and codes!!

could definitely be the sender. get a new one or a tester gauge from harbor freight. it won't cause the car to die but would start to make noise for sure and obviously wouldn't be a good thing.

pull a battery cable or pcm fuse and reset the code, then see if it returns. kinda odd that it happened after the cat was replaced. if you have access to a scanner you can look at the o2's oscillate for yourself. is it a reputable shop?

[timthescarred]

Re: Help with oil pressure and codes!!

Driving with a bad cat can burn up your front O2 sensors from what I understand. on most of the newer camaro's unplugging the battery won't clear the code. I takes 5 full warm-up cycles (about 10 minutes of driving) for the system to clear a code on its own (thats if it doesn't see the condition during those drives). Is there a local shop that will clear the codes, then you can see if they come back.

[Renzo]

Re: Help with oil pressure and codes!!

Ok, so I got the shop that replaced my cat to change the O2 sensors. I had them check for any exhaust leaks and there were none, so I left. The light was off for about 10-15 miles and it came back on again. This time I took it to another shop that I knew (just to get a different point of view on things) and the guy read the codes and they were for the same two oxygen sensors that I had just gotten replaced. He pulled up the readings for the oxygen sensors and he said that they were working just fine, and he cleared the code again and said to drive it for a bit and see if they light came back on. Well, after driving about 20 miles the light came back on again. Same two sensors. Any idea why this is happening??

[thebeewantsboost]

Re: Help with oil pressure and codes!!

thats crazy, did u ever verify you oil pressure? sounds like some kind of crazy logic problem.... maybe a bad ground somewhere? can you have somebody scan the o2's and see if its trying to oscillate? or like flat lining? does it run bad?

[Renzo]

Re: Help with oil pressure and codes!!

I have a shop taking a look at it now, I'll post what it was when he figures it out