i have a code reader-im also mech.tps showed low volts? replaced-didnt change anything-still has surge.plugs are new.what will the maf do if its dirty?

Have the crank shaft position sensor checked at the dealer, its probably on the way out

the mk viii uses a different error code system..turn the ignition on and off three times and leave it in the on position but turned off.make sure when you do this not to turn the ignition all the way to start at any time..the dashboard lights will blink..once for 1.and so on and for double digit numbers it would be like.it will blink twice then pause and the four times for 24

take it to a mechanic have it checked for intake manifold gasket leaks have had a few vehicles with that same problem and thats what it has been