97 lumina/monte carlo po141 o2 sensor???

[Boneyard]

I recently purchased a 97 monte carlo with a 3.1L engine for a winter car. when i first got it it had a code that was egr. i fixed the egr, that car sat for a couple of weeks, and now i keep getting a po141 o2 sensor heater circuit malfunction bank1 sensor 2. what does this mean? could the two thing be related? where is bank 1 sensor 2? HELP!!!!

[Scrapper]

o-2 senor is not that hard of a job.the 0-2's and there usuly are in front of cat.

[maxwedge]

Sensor 2 is after the cat.

[Boneyard]

besides a bad sensor, would there be any other reason for this code to activate? Like would a plugged converter make this happen? someone told me that because I had a previous egr valve code and now a o2 code that could be because of a plugged converter.

[maxwedge]

No, the this is the code for the heater circuit portion of the o2 sensor function, check the fuses first of course and the harness to the sensor.

[Boneyard]

what fuse would I check for an o2 sensor?

[maxwedge]

Check the wiring diagrams at autozone.com, repair guides.

[Boneyard]

i erased the code and probably drove it about 300 miles before it came back on. now it also has an egr insufficient flow code on too-which i had previously replaced the egr valve. are these two codes related to some other problem?