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No Engine Management Light but 7 fault codes

  • 27-08-2013 8:10pm
    #1
    Capri86
    Registered Users, Registered Users 2 Posts: 246 ✭✭


    I tried out an OBD reader on my car today (07 s40) and found 7 faults, none of which brought on the management light. 3 that got my attention were crankshaft and camshaft position sensor fault. If a fault is ever logged on these sensors, will it stay on the ECU until cleared by diagnostics. I have no idea how long they have been logged as I have never ran diagnostics on this car before.


    Another fault was P0313;Misfire Detected with low fuel P0171-System too lean
    Thought this was strange. Never seemed to have any misfiring problems


Comments

  • #2
    Ronnie Beck
    Closed Accounts Posts: 1,452 ✭✭✭Ronnie Beck


    Capri86 wrote: »
    I tried out an OBD reader on my car today (07 s40) and found 7 faults, none of which brought on the management light. 3 that got my attention were crankshaft and camshaft position sensor fault. If a fault is ever logged on these sensors, will it stay on the ECU until cleared by diagnostics. I have no idea how long they have been logged as I have never ran diagnostics on this car before.


    Another fault was P0313;Misfire Detected with low fuel P0171-System too lean
    Thought this was strange. Never seemed to have any misfiring problems


    The faults are stored in the ECU. I normally clear them and check again after a few day driving to see what's comes back up.

    Have you owned it from new? Could be faults fixed by previous owners or once offs from disconnecting a sensor.


  • #3
    Capri86
    Registered Users, Registered Users 2 Posts: 246 ✭✭Capri86


    Ronnie Beck wrote: »
    The faults are stored in the ECU. I normally clear them and check again after a few day driving to see what's comes back up.

    Have you owned it from new? Could be faults fixed by previous owners or once offs from disconnecting a sensor.

    Thanks. I figured they would be stored alright. I just remembered when the alternator failed I disconnected a lot of things. Could be from that


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