Broken down

[colin ling]

Hi

ML 280, 84000 miles 1st breakdown

When I returned home and turned it off there was a very strange hissing noise for a few seconds.
I went out half hour later and after 200 yards the engine stopped and dash engine signal came on
My new iCarsoft says
2047-1 The rail pressure is low
2510-1 Check component Y77/1 (boost pressure regulator) positioner signals fault
2616-2 Check component B60 (exhaust back pressure sensor) Exhaust back pressure to high

Green Flag have brought me home, so the question now is where do I start, anyone had this before ?

Thanks for your help


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[coneybiller]

Not sure on the hiss, but blocked DPF would cause high back pressure and possibly turbo related issues. Will it start or just crank over?