[s-cars] HELP: "Rusted" Ox Sensor

[Lee Levitt]

Vincent writes:

Mine had a light rusty color but no noticeable deposits. I'm not sure how
long it was in.

Lee
'95.5 S6 avant
'96 A6 quattro avant

>
> Hi all,
>
> I just removed my old Ox Sensor and it's clogged with a thick layer of
> rust coloured powder, approx. 1-2mm thick. I never have seen that on an
> Ox Sensor. The new sensor is ready to go in but I'd like to know what
> made this to the old one. On the Ox Sensor diagnostic photo I have, none
> have this light rusty colour, and none have a deposit this thick.