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Message: <blockquote data-quote="SuperG" data-source="post: 308997" data-attributes="member: 9305">OK...finally read the codes - P0193 Fuel Rail Pressure Sensor Circuit High Input (FRP)A descriptive: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. Damaged PCM. 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 replaced the FRPS ($80 from Ford) and cleared the code...it seems to run the same, however, so I wonder if I need to replce the brand new spark plugs that now look as bad as the previous ones?Also, I am going to let it warm up a bit and take it on a drive...if the same problem exists, when should the code come back on?I wonder if the cats are gas soaked now, too...anyway to tell?</blockquote>