Have you checked your fuel pressure, or for a plugged filter? It is not unknown for an EZ to kill a VP all by itself, but the most common cause is either a failed LP of plugged fuel filter. Fuel pressure at the VP44 inlet should be at least 12psi at idle, and no lower than 8 WOT.
If it is an experienced mechanic, they can find out if a timing or fueling box has been attached. The truck keeps a running log of data including timing, rpm, speed, fuel maps and so on. This data is not something that the owner can clear by disconnecting the batteries or other little tricks. I was told that it will take about 40 good trips to overwrite the data.
I went through this with mine. Setting 0216 codes frequently and only occasional noticeable problems. I waited until I had more definite problems, like smoke, stumble, low power, and such. If the dealer wants to do some testing, suggest that they just clear the codes, document it, and suggest that you keep driving until you get a more specific symptom. When the code comes back, go in, have them clear it and log it. If trips to the dealer are inconvenient, just keep a log of mileage, and conditions (outside temperature, speed, how long the engine was running, mileage) and hit Auto Zone or somewhere where you can have the codes cleared for free. It is a PITA, but it saves the hassle of them keeping the truck for a few days and coming back with the usual "Could not duplicate problem", or the "V" word.
I would not be concerned about it unless the dealer starts talking about finding the source of the VP44 failure other than the LP. If they start hinting at power mods, or asking you if you have bought any after market things for your truck, then I would get concerned. MAKE SURE that you put the data port plug back in! I have read about owners that were denied because the plug was missing and the insides were clean, and or the plug was clean and the port was dirty, and Velcro straps on the PDC.
Either get it equally dirty as the rest of the engine in that area by wiping a rag on the power steering pump to smear around any oil residue and then wipe the cap, or buy some engine degreaser and spray down your engine and wash it (low pressure wash!!!). Washing is the better choice. The MAP sensor is a simple little untruth, "I took the cap off the sensor to clean it and grease it. " if they ask.
Not that I am suggesting that you defraud the dealer in any way, since you did technically voided your warranty when you installed the Edge according to their definition.