Check Engine Light Problem - Car Lost Power *
 

Hi,
I am new to this forum...Sorry to start with a problem...

My check engine light is on...and i get these codes

17866

P1458

Exhaust gas temperature sensor 2 short to ground



17584

P1176

O2 Correction Behind Catalyst,B1 Limit Attained



16816

P0432

Main Catalyst,Bank2 Efficiency Below Threshold

My car lost power...any ideas what these codes mean...what do i need to change to solve the check engine light problem?

Tnx in advance.

check vag-com wiki it lists codes and potential causes