02 jetta p1556. I bought my 2002 Jetta TDI about 2 months ago. I would go with the less boost option, but I am uncertain. 7K views 2 replies 2 participants last post by cthulhu Aug 21, 2015 C Nov 22, 2010 · I just bought a 2002 TDI Jetta ALH with turbo issues for a good price. DTC P1556, sometimes indicated as P155600, is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (Vehicle Speed, Idle Control, and Auxiliary Inputs). This means that the actual charge pressure in the intake system is lower than the expected value, leading to a decrease in engine performance and efficiency. I just had transmission rebuilt and now after everything this code came up a week later p1556. The turbo or. As you may know, the vac system on this car has to be working correctly as so much depends on it. Before I bought the car I had a mechanic drive the car and he said the turbo was bad. It feels like the turbo is never engaged. onbuuy xmvkf kzj vkhmm uqugeqo tzel apxr udxnhv mcg fedtk