VAG-COM errors

[walian at att.net]

Hello all,

I am getting the following errors with VAG-COM. (97A6Q AFC engine)

16554 Fuel Trim malfunction bank1
    93-00 unknown error elaboration

00526 Brake Light switch (F)
   27-00 implausable signal

Airflow flap motor (V71)
  41-00 Blocked or no Voltage.

I have recently, yesterday added cheveron techron injector cleaner to my fuel. Could this cause the fuel trim issue? What do I need fixed? I don't like having the check engine light on, you know.


Thanks

Frank