[Mshumacher]

Hello Dacia Dokker 2012 1.5 Dci.
Car starts and stalls immediately.

Diagnostic
DTC00875  Fuel Pressure Too High, Regulation Rail Pressure Function Component Blocked.

DTC000172 Regulation Fuel Flow circuit, Parameter at minimum.

Monitoring parameters, car reaches the requiered fuel pressure to start 290 bar, but then raises to 1800, 2000 bar. I think the car cuts out because excessive fuel pressure.
Then the car doesnt start until you wait the fuel pressure drops, and then again starts only 1 time, for 1 second and stalls.

Opened injectors 1 by 1, to purge air.
Replaced new fuel pressure regulator on top of pump.
Replaced new fuel pressure sensor on rail
Tested Disconnecting MAF, EGR, Throttle.
Replaced Fuel Filter
Replaced Engine ECU edc17c42

Tested fuel gets to injectors.
Tested fuel pressure regulator out of car, the 2 of them :
The internal spring moves applying and cutting 12 Volt.
Resistance of sensor out of car , 1 gives 2.6 ohm, the other 3 ohms.

The fuel pressure regulator connector on top of pump gets 12V and ground with ignition.

Could be bad injector? But if injector was always open, the pressure would be low, not high ?
Could be high pressure pump ?

Any experience with this 1.5 Dci.. ??
Anyone has wiring diagrams ?? Getting lost with this car...