Low fuel pressure/Reduced engine power
First things first, this is my first Powerstroke. Not my first diesel, but it has been 10 plus years since I had one. I changed the fuel filters on my 2012 SRW F-350 yesterday. Followed the manual for purging the system, started the truck right up, and drove the 60 miles to work, and noticed that the LP fuel pump was loud. I noticed it at an idle at a stop light. Brushed it off as a noner, and assumed it was a normal thing after changing filters. Got in this morning and fired it up and started my 60 mile drive home. I got within five miles of home, and the dash lit up and the truck started screaming at me. The CEL came on, and I got two warnings. First was "Low Fuel Pressure", and the second was "Reduced Engine Power". I limped the last five miles home, and started the troubleshooting. I checked the connections on the engine mounted filter, and there were no leaks. (Burned the crap out of myself in the process, turns out after 60 miles, the engine compartment gets hot! Who knew!) I then rolled under the truck and got to looking at the frame mounted unit. Again, no obvious fuel leaks. I thought I had tightened the cap to the stop, because it stopped, but I guess I hadn't. So, I stuck the wrench back on it and tightened it the rest of the way to the stop. I turned the key on, and followed the procedure in the owners manual for purging the system, and fired it back up. The truck started right back up. The warnings both cleared, but the CEL did not. So here is my question, will the CEL clear, or do I need to take it somewhere to get it cleared? Also, why did it take 115 miles for the truck to throw the codes if there was a leak when I started it the first time? Any and all help would be great, and thank you in advance.