Hello Audi's family,

Can anyone tell me what on earth is this code means, P0431?

Few guys told me that it was a vacuum leak on the kombi valve located in the back, A faulty EGR valve on bank 2 that creates insufficient air inside the engine, bad catalytic converter on bank 2.

So what is it really? Since most of you guys are pro and mechanically incline thus to say this is what?
Do I need to take my ride to an audi dealer for further diagnostic or it just a simple issue?

Thank you and stay safe,

gilbert

 

16815/P0431/001073 - Warm Up Catalyst; Bank 2: Efficiency Below Threshold
Possible Causes
Warm Up Catalyst Bank 2 faulty
Possible Solutions
Check Warm Up Catalyst Bank 2
Set Readiness
Replace Warm Up Catalyst Bank 2