This alarm resulted in limp mode, yet actual fuel pressure numbers exactly matched demand fuel pressure numbers as scanned with DBIII - as I had previously purchased the Rail Pressure Sensor unit, I decided to see if there really was any difference. Same values scanned, but P0190 alarm went away and so did limp mode - must be some preliminary reading taken by ECM that is not available to DBIII

So, now I guess it's time for the water pump and timing belt job, for which I'll wait for warmer weather - a few more months shouldn't hurt, since I've let the li'l mule sit for four years for a simple sensor replacement

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go