mass air flow meter/air sensor for my 99 VW passat 1.8L 1781 L4 F1 turbo AE8 is acting up. I am getting a weak acceleration and slight loss of engine power. Autozone scanned the code for me and its for air flow meter problem[dont have the slip for code right now]? where it is located[picture[ and how much it should be to replace or is there any way around?

Thanks

indi