Hi everyone, I've been a member for a while now, luckily haven't had to ask any advice until now.

My audi cab (3.0) auto, has developed the 'flashing gear selector' issue, ive had the codes cleared and it was fine. 2 days later it appeared again, went back to the garage and these codes have been logged......

18201 Transmission output speed sensor 2 (g126) no signal p1793 intermittent

17090 transmission range sensor (f125) implausible signal p0706 intermittent.

The guy wasn't too keen on diagnosing the definitive item.


I can't really notice a difference in the cars performance or gear change but would like to get to the bottom of it.

I know there has been posts about the 17090 issue but can one of the above faults trigger the other?

Also is it a job which can be done diy.

I appreciate any help.
Thanks guys.