2016 F150 XLT 3.6L Ecoboost FX4

So the other day I noticed that my service light was coming on when I remote started my truck. When I would put the key in and turn it the wrench would turn off. I am pretty meticulous about the maintenance so I wasn't too worried about it and figured I would take it and get a code pulled. Then out of no where a couple days later I get a warning that my rear parking sensors aren't working. Again, turned off and on and all good. Two days ago the wrench and parking sensors warning came on and it was raining and windshield wipers stopped working. Again, seemed all good when I started today. While driving in the rain today all hell broke loose with the warnings. Service warning, parking sensors, ATS sensor, down hill assist warning check engine light all went off. Had to keep hitting ok to clear them. The kicker was I lost all engine power this time. Truck was running and rpms looked fine but when I pressed on the accelerator nothing. I turned my hazards on and pushed the accelerator all the way down and it slowly gained momentum and I was able to turn into an autozone and get them to pull the codes. They said the only thing they got was P025a "fuel pump module control circuit/open" and U0109 "lost communication with fuel pump control module." Again, when I turned it on and off it seemed to fix the issue but a little while later the service engine soon wrench light came back on.

I am hesitant to just replace that module because all the systems failed at one time and there seems to have been an electrical issue somewhere building over the last week or so. Has anyone seen this or have any suggestions? Nothing new electronically changed or updated recently. Again, seemed worse in the rain.

 

Step One: Test your battery. If you still have the OE battery, it may be time for a replacement. If the voltage drops too low during cranking, then a module or several modules may not boot up properly. This is what causes all the weird DTCs. There are plenty of threads here about this topic.
If the battery stress tests okay, then check all the battery connections and under hood grounds.

 

Agree with 52merc on this one. Likely a failing battery.

 

Update: the battery is not OE and stress tested fine. Thanks for throwing that out. I did notice one other thing that the my left blinker was blinking faster then normal. So I looked for burnt out light bulbs and the main bulb for drivers blinker wasn't lighting up. I pulled my driver's headlight out and it looked like one of the connectors had come loose? I plugged it back in and the blinker started working again and the speed that it was blinking inside went back to normal. Would water getting in that connector back behind the light be causing the computers to go nuts? I made sure all the connections were good and didn't get any warning lights last night or this morning. I guess I will wait for it to rain again and see if it is really fixed. Thank you both for the reply.

 

I had a 16 that did something similar and it was a bad connection from a body control module behind the glove box, probably wasn't plugged in properly from the factory.

 

Grounds seem to be notorious for electrical gremlins as well.