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10-14-2007, 08:42 AM
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Help! Engine Codes
So I've put about 500 miles on my new engine and I got 2 codes that have come up.
1. P0190 Fuel Rail Pressure Sensor Circuit Malfunction 2. P0193 Fuel Rail Pressure Circuit high input Anyone have any ideas or suggestions? Thanks 
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10-15-2007, 06:39 PM
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10-15-2007, 06:57 PM
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Let me check out the service manual when I get home. I'll update this after 11pm
__________________
2002 Sonic Blue GT Premium, Full S2 Conversion, Corbeau TRS Leather, Corbeau 3" Competition harnesses, Sparco Harness Bar, P-1SC StageII/8lb Intercooled ProCharger, 14" Alcons Now with MagnaPac side exhaust and O/R H! This thing is LOUD  2008 Roush Nitemare #3
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10-15-2007, 10:15 PM
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p0190 - Fuel Rail Pressure Sensor Circuit Malfunction (FRP)
Description- The comprehensive component monitor (CCM) monitors the FRP sensor to the PCM for VREF voltage. The test fails when the VREF voltage from the PCM drops to a voltage less than a minimum calibrated value. Possible Causes - *VREF open in harness *VREF open in sensor *VREF open in PCM. Diagnostic Aides - Verify VREF voltage between 4.0 and 6.0V> P0193- Fuel Rail Pressure Sensor Circuit High Input (FRP) Description - 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. Possible Causes- *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. Diagnostic Aides - 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.
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2002 Sonic Blue GT Premium, Full S2 Conversion, Corbeau TRS Leather, Corbeau 3" Competition harnesses, Sparco Harness Bar, P-1SC StageII/8lb Intercooled ProCharger, 14" Alcons Now with MagnaPac side exhaust and O/R H! This thing is LOUD 2008 Roush Nitemare #3
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10-16-2007, 02:07 PM
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Thanks!
I am getting 5.0 volts at the plug before the sensor. So maybe it is the sensor then. And I can reset the light and then after a couple of decent pulls it comes back on.
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10-17-2007, 07:00 PM
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Check the vaccuum hose coming out of the FRPS, if it smells like gas chances are good the you're FRPS is toast. Mine blew when I was on the dyno and I got those same errors.
I replaced mine, reset the computer for 30 minutes and it fired right up.
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Tom "Your pretty sharp for a circle."
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10-18-2007, 09:09 AM
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Clear them and see if they come back first !!! Fords pop a 190 code all the time for no reason...jim
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#1 2001 One of a Kind 6 Speed - ROUSH Stage 3 Convert #01-019 Color: L2 Blue/Tan/Tan / ? RWHP AT 6000 RPM 6 PSI 380 TUNE/ ? RWTQ AT 3200 RPM 6 PSI 380 TUNE C&L Mass Air / C&L Intake Tube / Magnaflow Catted X Pipe / Roush Shorties / Exhaust(old school) / T-56 6 Speed (B) / Pro 5.0 Shifter / Jack Roush Shifter Handle / Mark Martin Shift Knob(from #6) / Dynotech Alum Driveshaft #12 / F.M. 8.8 DIFF. Packed / F.M. 3.73 Gears / 31 Spline Moser Axles / 10.5 IN McLeod Clutch / Kenny Brown Subframes / Roush Std Subframes / Kenny Brown Strut Brace #2 For Sale 2001 Roush 4X4 Expedition 1 0f 6 Lariats
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10-18-2007, 04:17 PM
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I thought about just replacing the FRP sensor but the damn things is $74! So I hate to replace it if thats not the problem.
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10-18-2007, 08:19 PM
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Quote:
__________________
#1 2001 One of a Kind 6 Speed - ROUSH Stage 3 Convert #01-019 Color: L2 Blue/Tan/Tan / ? RWHP AT 6000 RPM 6 PSI 380 TUNE/ ? RWTQ AT 3200 RPM 6 PSI 380 TUNE C&L Mass Air / C&L Intake Tube / Magnaflow Catted X Pipe / Roush Shorties / Exhaust(old school) / T-56 6 Speed (B) / Pro 5.0 Shifter / Jack Roush Shifter Handle / Mark Martin Shift Knob(from #6) / Dynotech Alum Driveshaft #12 / F.M. 8.8 DIFF. Packed / F.M. 3.73 Gears / 31 Spline Moser Axles / 10.5 IN McLeod Clutch / Kenny Brown Subframes / Roush Std Subframes / Kenny Brown Strut Brace #2 For Sale 2001 Roush 4X4 Expedition 1 0f 6 Lariats
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10-19-2007, 04:13 AM
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Only when I clear the code and drive and accelerate hard the codes come back. I will check the vac line and see.
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10-21-2007, 01:17 PM
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Well I popped off the vac line and there is no smell or trace of gasoline.
Now I'm really not sure what to do. I was just going to order another sensor but I'm not so sure that is the problem now.
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10-22-2007, 04:11 PM
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Had the same issues. You might get lucky and it's just your pressure sensor. I've been thru several. Just recently mine went out, replaced it and found out one of the fuel pumps died. Replaced pump assembly and no more codes.
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01 Stage 3 RP8 ROEA member 380R upgrade,2.8 pulley,Bassani xpipe w/cats,Sraight shot CAI,aluminum driveshaft,Caster/Camber plates, MGW short shifter,Roush fuel & boost gauges,subframe connectors,clutch/quad/firewall adjuster,11" alum/flywheel and SVT 03-04 cobra clutch upgrade.
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10-22-2007, 04:33 PM
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10-22-2007, 05:22 PM
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Anyway to check to make sure both pumps are working. I would assume that they are because I have about 40psi of fuel pressure at idle.
But I also assume that one pump could possibly provide that?
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10-22-2007, 06:19 PM
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If it helps any, I have a single pump and throw the same code.
__________________
2002 Sonic Blue GT Premium, Full S2 Conversion, Corbeau TRS Leather, Corbeau 3" Competition harnesses, Sparco Harness Bar, P-1SC StageII/8lb Intercooled ProCharger, 14" Alcons Now with MagnaPac side exhaust and O/R H! This thing is LOUD 2008 Roush Nitemare #3
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10-22-2007, 07:11 PM
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Quote:
Someone said on another site that the "rough" idle I spoke of in another thread could be related to the code I'm getting/FRP sensor going bad.
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