Although my 2003 2.0 jtd ducato drives, it has seemed a bit gutless lately. I plugged my obd reader in and im getting zero maf readings, so im guessing most likely culprit is sensor.
Next issue seems to be no boost, or constant boost if the torque software is to be believed, it reads a constant 7psi if atmospheric pressure adjustment is set to 14.7 in torque, 22psi if set to 0 and 36 if set to -14.7. It does not move from these figures whether at idle or driving.
Third issue is the sensor in the pic below, it is in the rubber pipe which exits the rocker cover breather, but the plug for the sensor has been cut off at some point leaving just the black and the blue wire, any ideas what this sensor is ?
Other than that lot,van is fine

It looks like the oil vapor heater which is I'm told is only needed in very cold conditions.When it shorts it blows a fuse which disables the speedo and several other things.Mine is disconnected because of this happening to me.