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Hi all,
I have an issue with my 2016 i800. It won't rev any higher then 3000 rpm so I took it to a friend who put it on his diagnostic machine. The fault code comes up as P256300, which say its the Turbo Boost Control Position Sensor. When driving the car at 3000 revs he cancelled the fault and the turbo kicked in for just a second or 2 and the car accelerated above 3000 revs then the error come back again and it was stuck at 3000 revs again. He has recommended taking it to a turbo specialist, but I thought I'd ask you guys if any of you has had any similar issues and resolved them yourselves?
 

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Drives : Nissan NV200 Flies : Rans S6ES
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FWIW, I had to diagnose turbo codes on a couple of vans (both FIAT) a couple of week ago. In both cases it was cause by the vanes inside the turbo being jammed after the van was parked up during the COVID-19 lock down. I fixed it by disconnecting the turbo actuator from the push rod that moves the vanes and just worked the rod back and forth by hand until the vanes moved freely again. With that done I reconnected the push rod, erased the trouble code and done a short test drive to make sure engine power had been restored. I guess that has fixed it because 2 weeks have passed and I've had no phone calls saying otherwise...touch wood.

If I helped you fix it, why not...

Your support is greatly appreciated
 
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