99 Grand Marquis with P1405 OBDII code
My check engine light came on. The car also started making a noise during acceleration.
I read about some other Ford vehicles that had this code and it's a DPFE sensor, upstream hose off, plugged or cracked. One person had reconnected the hose himself. I'd like to try to look at the hose myself, but I don't know where it is or what it looks like. Does anyone know where it is or how I can get a diagram to show where to look?