Turbo waistgate sticks a little in middle would this put car into limp mode????????????

You don't say which model vehicle but here is a general link. P0299 Turbo Supercharger Underboost

You put it in park and turn off and it resets. You turn it on and it runs awhile and zeros out. Try looking at the parking sensors and the on board computer.

You need to have the codes read for a good response. But you have a couple problems going on. No spark could be a fuse, crank sensor, wiring , or the computer. Limp mode is another problem. It could be a engine or transmission problem. Limp mode doesn't kill the engine, it puts the transmission in a certain gear so you won't be able to cause more damage.

Start with the turbo gasket , then work your way thru the limp mode and the codes.. Codes are there, have them read...

The ABS system may cause a vehicle to go into limp mode if it is defective. Most times that will happen if your ABS light is lit up on your dash board!

Now if i knew what you meant by blew ?? then i might have a idea --most turbo faults are caused by dirty oil and changing the engine oil every 5000miles with a filter every third oil change will stop this problem .The other problem is the turbine vanes breaking off or being damaged by grit where the air filter is missing or a pipe loose or split allowing the thing to suck in unfiltered air but i do know someone with one of these and he sold it in the end and bought a transit as the turbo gave up quite often ,but without taking the turbo apart then i couldnt tell you why they are failing but i do know he kept a small hand held diagnostic machine in the cab and when it went into limp mode he cleared the codes and off he went again .Seem to remember as well the waste gate operating piston playing up i think a rubber tube perished so it didnt open and the increase in pressure as the engine revved up caused the thing to go into limp mode as too much pressure was being generated ,the rubber tube goes from the pressure side of the turbo to the piston its about 4cms long so as the air pressure builds up it this pressure pushes the piston which opens the waste gate which is a little flap on the exhaust side of the turbo into the exhaust manifold so when it opens it allows the exhaust gas pressure to go straight down the exhaust pipe releaving pressure on the turbo vanes .If the pressure in the inlet side goes too high then a sensor will put the engine into limp mode .Hope you understand this technical jargon ?

have the mechanics checked the egr valve and the vacuum lines and hoses. like vac leaks, n75 bad, vnt sticking, intake sooted, egr passing, and sooted up exhaust turbine. Bad Maf (Oxygen Sensor)
Leak in the vacuum system
Faulty N75
Bad actuator
Dirty gummed up turbo causing variable vanes to jam or stick

it can be any of above symtoms. hope this steers you in the right way. have a good day !!

16619 -Engine boost condition - Limit not reached. Check intake hoses/ connections for leaks. Check Turbo charger waste gate regulating valve/ waste gate working correctly. Must move freely when accelerating, won't achieve full boost if waste gate sticking open. Check Turbo impeller turning freely, oil feed pipe for turbo can get blocked causing impeller to seize. Engine compact, not easy to access these components.

One of the thin vacuum pipes must be torn and the minute you go into higher/full boost the ECU doesn't get the requested pressure from the turbo and to protect the tubo from overboosting it puts the car into limp mode, The limp mode only resets when you switch the car off and back on again.

Trace all the thin 6mm vacuum pipes and you will find your leak.

You will have to have the fault codes read and removed. If it is permanently in limp mode it may suggest another problem.