Driving with bad front oxygen sensor?? - 850 turbo

[Me]

My check engine light came on a couple of days ago; I have diagnosed a bad
front oxygen sensor from the codes shown. How long/far is it acceptable to
drive before replacing the sensor? I don't want to do any damage to the cat
converter or rear sensor. Thanks.

 

[Jeff Lesperance]

Well, IPD sells a new Oxy sensor and the wrench to DIY. There are two on
the 850, I think. Performance & fuel economy will probably suffer, maybe
long long term there may be cat damage, but I don't know really.

 

[John Horner]

My check engine light came on a couple of days ago; I have diagnosed a bad
front oxygen sensor from the codes shown. How long/far is it acceptable to
drive before replacing the sensor? I don't want to do any damage to the cat
converter or rear sensor. Thanks.

Replace it ASAP.

John