04 GC check engine code 0138

[JLJBTM]

The light came on yesterday so i check it today and i get a code 0138
The book say's (o2 sensor circuit high voltage bank 1 sensor 2)

The book does not say where it's located ?
My questions are: does it just need replacing ? Is it covered under the 7/70 ?
If it's not covered and just needs replacing can someone tell me where (bank 1 sensor 2 is ?)

Jack

[mfahey]

Check your warranty book but as an emission related item, I believe there is a special warranty period for it.

[vipergg]

I think it is like 80000 miles on a O2 sensor as it is federal emmissions item but check your owners manual its all in there .