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Service engine soon? Po190

Old 07-30-2013, 08:44 AM
  #1  
timritchieblue
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Default Service engine soon? Po190

So I went to get my car tested for emisions,,,

NOT GOOD.. REJECTED
I never have had a engine light on, after my test, driving home, and light comes on?? Scanner says code po190? What to check now? Fuel pump?
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Old 07-30-2013, 10:12 AM
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cliffyk
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P0190 indicates Vref (the nominal +5 V reference voltage supplied by the PCM) is not within the range 4.0 to 6.0 V at the Fuel Rail Pressure (FRP) sensor; more about the possible causes here.

I see you are running a "built" engine, are you still running the returnless fuel system? If you converted to return-style and removed or disconnected the FRP sensor then you need to change the Fuel System Type scalar value in the tune to 0, to disable the PCM's monitoring of the FRP sensor. This should stop it from throwing DTC P0190...
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Old 02-06-2014, 02:45 PM
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timritchieblue
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Going to try a FLPS? I'll try to stay off the rev limiter
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