1999 Grand Marquis P0401 Code
So I'm back, with another problem this time. Other than an issue with one of the coil packs, the car has been running great. Shortly after I got gas this morning (probably 5 miles after I left the station) my check engine light came on. Figuring it was just an evap code I ignored it and drove the rest of the 20 miles to work. When I got here, I grabbed my OBDII scanner and pulled the code. It gave me P0401 which from me searching appears to be Insufficient EGR Flow. About a year ago, I had issues with the DPFE and the hoses leading from the EGR line to the sensor. I replaced the hoses and the sensor and hadn't had a lick of trouble until this morning. I reset the code but I suspect it will come back. Any idea where to start troubleshooting this??