Did you get to the bottom of the code 19? (MAFF short circuit to + engine running?).
I have one in with this code as well as 72 - Fuel pressure info - pressure low, and 83 - Fuel pressure solenoid valve open or short circuit.
I have already found the broken shaft on the low pressure pump so while I get that sorted I am trying to find out if the code 19 is relevant. I have removed the ecu and checked all the wiring that I can see with no signs of chaffing anywhere.
regards, Bryan.