I have an 05 duratec. Got this check engine light today and had it checked at the local auto parts store. I looked up the code and found this:
P0193 - Fuel Rail Pressure Sensor Circuit High Input (FRP) The comprehensive component monitor (CCM) monitors the FRP sensor circuit to the PCM for high voltage. If voltage were to fall below a calibrated limit and a calibrated amount of time during testing, the test will fail. FRP signal shorted to VREF or VPWR.
FRP signal open (gasoline only)
Low fuel pressure (NG only)
Damaged FRP sensor.
High fuel pressure (caused by damaged fuel pressure regulator) NG.
A FRP PID value during KOER or KOEO less than 0.3 volts for gasoline or 0.5 volts for natural gas vehicles (NG) would indicate a hard fault.
I'm not really mechanically inclined so I don't really understand that description very well. Two things that I think may be important:
1) I was running very low on gas, about 25 miles with the gas light on.
2) I changed the fuel filter a month or two ago. I did it myself and like I said, I'm not mechanically inclined so I may have messed something up, but I don't think it would have taked this long to throw a code.
Should I be worried? What would cause this?
The car is not modded and it seems to drive like it always does