Forum Discussion

blkdodge's avatar
blkdodge
Explorer
Mar 15, 2016

2012 Ram 3500 throwing a P0191 code

It says fuel rail pressure sensor.
Possible fix fuel filter or sensor.
I replaced fuel filter and disconnected the batteries for about 20 minutes and code is still there.
Do I need to leave them disconnected for longer or will that not do any good.

Code never went away not even for a moment.
Any thoughts
David
Tow Vehicles
  • blkdodge's avatar
    blkdodge
    Explorer
    Mar 17, 2016
    With 100 miles since I cleared the code, it has not came back. Keep your figured crossed that the problem was the fuel filter.
  • blkdodge's avatar
    blkdodge
    Explorer
    Mar 16, 2016
    I cleared the code, now time will tell if it comes back. I'm thinking this may also be covered under the emissions warranty. It's not 5years old and has less than 100K for mileage.
  • eHoefler's avatar
    eHoefler
    Explorer II
    Mar 15, 2016
    If the condition has been corrected, the code will disappear usually after 5 key cycles.
  • bguy's avatar
    bguy
    Explorer
    Mar 15, 2016
    You may have a defective sensor.
    Also you may have fixed the problem but the system has to go through enough drive cycles to clear the light. It may take 3 or more without the fault being present for the code to go away(light to go out) but it will be stored in the computer.
  • FishOnOne's avatar
    FishOnOne
    Nomad
    Mar 15, 2016
    Check for a loose wire on the fuel rail pressure sensor. If no dice then it's time to visit your Ram dealer.

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