C is the "secondary air pump".

In which case it wouldn't cause any of those codes.

Nor would it even throw a code unless dirt was sucked up the tubing and the pump failed.

 

Ok thanks! The car is going to the shop this week. I can't see anything wrong and the CEL light came back on, anyone know what could cause these codes?

Thanks!

 

Item A is your EVAP purge regulator valve. Check that the connections are tight and the valve is working. You can measure the resistance of the valve coil. It should be between 22 and 30 ohms. Is your gas cap seal okay? Can you smell any gas around the passenge side wheel well with car running. It could also be a leak around the EVAP canister behind the passenger side wheel well liner.

 

Hi - Did you ever figure out what was wrong and causing these codes? I have the same code on my 98 Passat and I'd like to know what is causing it before bringing it into the shop.

 

I just got an answer from VW Service what these codes were and they are fixing it now.

P0441 was the Purge Valve as many were suggesting...I drove for about a month with this on, thinking that was ok because it was a State Emission related code. But, that damaged the Charcoal Canister, that is why the p0455 code came on. Both parts are being replaced for $495 by VW.

What I learned from this...if P0441 comes on take care of it right away to avoid any further damage that will add more costly repairs.