I had a CEL light turn on in my car.(98 GS) So I pulled the codes, 02 sensor bank 1 sensor 2 No reading, and No signal circut. So I figured the O2 was bad. Got a Bosch wire in and replaced.

CEL went off for 2 weeks. Then popped back on, so I checked the codes:

Bank 1 s 1 no signal
Bank 1 s 1 ciruit
bank 1 s 2 High voltage
bank 1 s 2 circuit

WTF is going on here?

The DS O2 was hooked as follows, according to the directions recieved.

OE Sensor
black - black
white - white
white - white
Grey - Grey

Help me out please, I havent really put my head into it yet, I will later i think i already know what going on but i dont know why i have front O2 codes now.
Just gimme some input.
Thanks
Jarod

I contributed to the Wiki.

sounds liek you have a wiring problms somewhere. Start checking your chassis ground mand make sure you have a good ground at each sensor. If the heaters are not heating up because of a lack of ground then then the sensor will not read and appear to be failed.