2005 Audi A4 1.8T Convert; auto tranny; 51K miles

Light just came on this week. Autozone read code.

Is this really a sensor to replace or complete tranny replacement? Conflicting posts here. Can I fix this myself?

I saw one thread at this forum showing how to replace sensor - but photos and all not visible. See here: https://www.audiforums.com/forum/aud...eplaced-60646/

Does someone still have a complete step by step repair so my daughter can save $2000 (current mechanic quote w/o seeing the car).

 

Now CEL no longer comes on.
Are we no longer in need of a $2K repair? Or is worse damage being done while light is out?

 

CEL back on again! Ugh...

 

So the CEL goes on/off every other day or so.

Is this a sensor issue? Is there a bigger problem? Do we really need to fix this?

Thanks in advance.

 

Can anyone offer some assistance here, please?

Is this something we really need to fix or just a bad sensor?

It's on again/off again.