Fault code p0030 , p0130. help

[kek700]

just filled up with petrol then faults p0030 and p0130. i would have thought if it was contaminated fuel both sensor would fail..

does anyone know how easy is it to change sensor 1 bank 1 s02 sensor.

Any idea were i can buy a cheap s02 sensor (AMK 2001 S3).

any advice welcome.

 

[kek700]

removed connector left top of engine bay behind turbo metal pipe, noticed that i have a wide band sensor. put it all back together. now no more fault codes....

anyone know what the obdII reader should give from the 02S12 sensor, my OBDII reader is only showing the last sensor (after cat) ? it shows 0.45 volts at first then about 0.850 volts after a short warm up period. and shows this value for most of the running about, motorway, idling, town never changes foot lightly on gas or to the floor.