Hi, I have a 2017 Ram 5.7l Hemi. I had gotten the P018C code and so replaced the fuel pressure sensor with the newer model sensor. I replaced the connector and rewired it according to a video on YouTube since the new pinouts are different than the old pinouts. So the P018C went away but I now have a P018B. I figure the wiring is correct or I'd likely either have the P018C or P018D codes. But I cannot find much on P018B - what is it, how to troubleshoot? Anything I find is pretty general. The truck runs fine, starts fine. No rough idle, no loss of power. Any assistance would be appreciated. Thanks!

 

Fuel pressure sensor "B" (is there more than one??) can't maintain constant voltage..... Put a gauge on it, see what your fuel pressure is doing.