P0193 Ford -

Question

I have a 2006 Mustang with this code. I am running the GT500 dual fuel pumps and FPDMs. I have replaced the fuel pressure sensor on the fuel rail, check all connections, replaced the fuses. I don't know what else to check?
Where does the fuel pressure sensor on the fuel rail get is power source from? I know I have read it is supposed to get no more than 5 volts but from where?
Could I have a bad FPDM? Relay?
Car runs fine just keeps popping up this code.

Answer 1

P0193 Fuel rail pressure sensor A circuit high

The reference comes from the ECM,You also have a fuel pump relay listed as F41, swap that out or replace it,As long as you have 4.5volt reference or 5 volts reference troubleshoot the sensor voltage,With key on engine off the fuel pressure should be 35 psi and sensor voltage reading 2.2 volts at engine running you should have 27 to 37 psi and sensor voltage should be at 2.2 volts to 2.8 volts,

Comments

Perfect. Thank you!
Using this information I was able to determine that my brand new sensor was bad.