I have the following error message when I do a VAG scan on the engine module. 00575 intake manifold pressure. 17-10 control difference intermittent 1998 110BHP A4. My car only has 50K miles on the clock, the MAF has been replaced as there was a flat spot about a year ago. I have read that cleaning the inlet pipes sometimes solves the problem, has anyone got any additional info? Thanks JIm.