VW’s highly tuned Turbo Direct Injection (TDI) diesel engines may occasionally respond to fuel differences by kicking into “Limp Mode.” Limp Mode response is experienced occasionally and is not indicative of a problem. Limp Mode displays symptoms of fuel filter plugging, yet occurs predominantly at start up.
Limp Mode is apparent when the TDI has lack of power, no boost or a 2K rpm limit. If you feel Limp Mode kick-in at start up, simply pull over, turn off your car and re-start it. The re-start will re-set the emissions chip, and onward you go! If problems persist, see your trusted mechanic.