So after installing a new (built) motor, can't seem to get this P0192 code figured out. Fuel rail pressure sensor circuit low input. From what I read, it means fuel pressure isn't hitting the desired target. I do have port injection that is T'd at the hpfp, but I am gettin fuel from the hose coming off the firewall. Replaced fprv with parts car and worked for 2 drive cycles (approx 8 miles). Then bought new one from Mazda, no luck. Swapped spill valve off parts car, no luck. Swapped pressure sensor off parts car, no luck. Pulled hpfp with Autotech's and installed stock hpfp with no luck. I think it has to be a wiring issue because sometimes it will read, and then will not. I will attach some logs for those who want to look. I find it odd though that sometimes the afr will be pegged at 14.85 when the car is running (log 308). One of the logs show the car running with no pressure (log 309). I'm not good at diagnosing electrical issues, that's why I came here for help. I checked the wires going to the sensor (I should note I have Eric's wire tuck), checked the wires at the fuse box under the hood and can't find anything that looks damaged. Unplugged and plugged stuff back in. Tried cleaning connectors and pins on that sensor and the plug by the fuse box. I have a multimeter but have never used it and not sure how to check the voltages properly. Logs 315 and 316 are what it does now, which is not run, and if it starts, it quickly dies.