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Limp mode

Discussion in 'Range Rover' started by johncollins, Dec 6, 2021.

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  1. johncollins

    johncollins New Member

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    Hi I have a range rover sport 2 7 2009 tdv6 auto and it regularly goes into limp mode with no error codes all it says is engine system fault turn off restart back to normal had 2 diagnostic,s and also in to an auto electric specialist no joy as to why can anyone point me in some direction
     
  2. marjon

    marjon Well-Known Member Full Member

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    How old is the battery?
    Check it is 100%. if you need to change get the largest capacity in the space available.

    J
     
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  3. Datatek

    Datatek Well-Known Member

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    Check you have at least 14.7 volts engine running.
     
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  4. johncollins

    johncollins New Member

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    Battery checked and OK still confused
     
  5. kermit_rr

    kermit_rr Green Member Full Member

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    What is the voltage while the engine is running?
    I think you need to see the live data and catch it in the act
     
  6. biketeacherdave

    biketeacherdave Well-Known Member

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    What diag exactly was used ??
     
  7. Salisbury Nick

    Salisbury Nick Well-Known Member

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    I recognise this problem. posted the same issue myself a few years ago with my L322. In my case it is a known firmware fault. You put your foot down, say to overtake, then the engine management system has an issue with the air intake demand, maybe has an issue with an air mix/fuel sensor, then you get past the slower vehicle and suddenly find yourself doing 50mph on a dual carriageway in limp home mode while the snail you just overtook sails past looking at you like you are a complete ****! You pull over, restart and you are back to normal. WTF!
     
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  8. kermit_rr

    kermit_rr Green Member Full Member

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    Were you able to fix it?
     
  9. Salisbury Nick

    Salisbury Nick Well-Known Member

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    No. I went to Land Rover who denied all knowledge of it. But that was just the local dealer. it still does it now. Bloody frustrating. I’ll see if I can find out the original thread.
     
  10. Salisbury Nick

    Salisbury Nick Well-Known Member

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    Can’t find it in my threads. Maybe I just read up on it other threads.
     
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