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F250 P0304 Trouble code

Discussion in 'Ford Trucks' started by yellowdogs, Jan 30, 2011.

  1. yellowdogs

    yellowdogs Junior Member
    Messages: 26

    Does anyone out there know what would cause the computer to throw a P0304 DTC? The truck is an 2006 f250 with the 5.4. Truck seems to run OK, feels like it lacks some power at times. Any help would be appreciated
     
  2. drp

    drp Senior Member
    from ontario
    Messages: 170

    P0304 = cylinder no. 4 misfire detected.

    Bad coil, plug maybe.
     
  3. captbob320

    captbob320 Junior Member
    from vermont
    Messages: 1

    DTC P0304 cylinder 4 misfire detected . Check cop for engine coolant leaking on it.
     
  4. yellowdogs

    yellowdogs Junior Member
    Messages: 26

    Thanks for the info! This maybe a stupid question be what's the cop?
     
  5. mrv8outboard

    mrv8outboard Senior Member
    Messages: 197

    Coil On Plug. The ignition coil is mounted to the top of the spark plug with one bolt.
     
  6. drp

    drp Senior Member
    from ontario
    Messages: 170

    liquid in the plug hole can cause a short.
     
  7. yellowdogs

    yellowdogs Junior Member
    Messages: 26

    I checked the codes again today and another code came up as well. P0340. I beleive this is a cam shaft position sensor fault. Can anyone shed any ligh on this one?
     
  8. drp

    drp Senior Member
    from ontario
    Messages: 170

    P0340 cam position sensor "A" (Bank one or single sensor)