Hi all, hope some one can help, my 150 tdi has been shunting a bit on a light throttle in 3rd and now I've just gone up the dual carriageway about 6 miles everything ok but on return journey had a drastic power drop, so I think it went into limp home mode. I've connected it to a vag com programme and it's come up as.....code - 17964 charge pressure control , negative deviation-
Has anybody got any ideas, ie might it be a simple fix or bloody expensive.
Would appreciate any advice. Cheers chesterxiii.