My wife Linda's '01 New Beetle has the 1.8T, but I haven't seen that code. I get the code that says I have uneven flow in the secondary air injection system. It's from the plastic fitting on the air cleaner housing that's cracked. I have duct taped it but it still leaks a little. I can reset the code and it will go for several hours (couple days) of driving before it pops up again.
That is a fun car to drive, but it is poorly built and is falling apart at just over 115k miles. Everything that's plastic on it is breaking and unfortunately most of the car is made of plastic, including a lot of the cooling system components like the radiator tanks and all the fittings. I have replaced a lot of that stuff, including the electric fans (they are plastic and broke), the switch for the fan for the AC/heater and just a whole bunch of stuff.