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O2 Sensor Fail?

Posted: Mon Oct 28, 2013 6:06 pm
by Pappy
So my trusty ol sedan (bone stock 02 ZTS) threw a CEL today. I pulled the codes and I'm getting codes for both o2 Sensors..... I cleared the codes, drove about 3 miles and it came back on again.

The car is acting completely normal and is running completely smooth (which I don't think it would if that Bank 1 o2 was actually failing).....

I'm having a hard time believing they both just magically failed at the same time, together.

Any ideas what else could be causing this?

Re: O2 Sensor Fail?

Posted: Mon Oct 28, 2013 8:16 pm
by Patalrob
My 2000 has both codes on ATM also. I haven't yet changed o2 sensors but I have heard of them "magically" going out at the same time. Mine does run fine the idle is doggy under hard use "A/C, P/S" Gas mileage is crap in town.. I suppose I should just give it a full tune up... :?

Re: O2 Sensor Fail?

Posted: Tue Oct 29, 2013 7:06 am
by iminhell
What code exactly, heater circuit?
I'd look at the fuses first.

Re: O2 Sensor Fail?

Posted: Thu Oct 31, 2013 6:29 am
by Pappy
You're correct it's blowing the #18 fuse, so there is a short somewhere I need to find.

Thanks