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Nissan xtrail p0120

  • 16-05-2012 2:57pm
    #1
    paultronix
    Registered Users Posts: 150 ✭✭


    have a 2003 nissan xtrail 2.2 with a fault code p0120 accelerator position sensor,it won,t rev up past 2000 rpm
    i have a second hand pedal but no different when fitted so my question is does it need to be calibrated to the ecm and if so can this be done manually without the use of diagnostic equipment?
    thanks.


Comments

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


    paultronix wrote: »
    have a 2003 nissan xtrail 2.2 with a fault code p0120 accelerator position sensor,it won,t rev up past 2000 rpm
    i have a second hand pedal but no different when fitted so my question is does it need to be calibrated to the ecm and if so can this be done manually without the use of diagnostic equipment?
    thanks.

    I'm no expert but googling that fault code suggest throttle position sensor is at fault. This is different than accelerator position sensor. Its in/at the throttle body itself.


  • #3
    crosshair1
    Registered Users Posts: 554 ✭✭✭crosshair1


    Check that the earth strap isnt broken on the front n/s above gearbox
    You can adjust the app sensor screws to allow the fault to clear.


  • #4
    paultronix
    Registered Users Posts: 150 ✭✭paultronix


    thanks a million crosshair 1 you were 100% correct,a broken earth it was so all sorted now and thanks again. :D


  • #5
    gregjregan
    Registered Users Posts: 4 ✭gregjregan


    I have the exact same problem - fault code p0120 on 03 x-trail.
    Dealer wants 850 euro just for the accel pedal.

    "Check that the earth strap isnt broken on the front n/s above gearbox"
    Can you help with the above instructions? Where exactly is earth strap?

    "You can adjust the app sensor screws to allow the fault to clear."
    Can you give more detail on what to do?

    Sorry if I am asking basic questions.

    Thanks,
    Greg


  • #6
    paultronix
    Registered Users Posts: 150 ✭✭paultronix


    follow your negative lead from the battery down to where its bolted to the front of your gearbox and see if the lead is broken?
    if so repair or replace it and see if you get your pedal back,if it is o.k you don't need to worry about calibration step.


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  • #7
    gregjregan
    Registered Users Posts: 4 ✭gregjregan


    Cable goes from negative of battery to top of gearbox. Half way it is tied off and here cable very worn (but not fully through). Will try and replace and see if it makes a difference.
    Thanks for info.


  • #8
    gregjregan
    Registered Users Posts: 4 ✭gregjregan


    Just to follow up on this...
    I replaced negative battery lead and reset fault code and everything is working now.
    Negative battery lead goes from battery to top of gearbox, but is bolted on to chassis half way. Cable was very corroded at chassis (nearly worn through). From what I read on nissan servie manual, this (corrosion/worn cable) will cause drop in current, hence the above circuit fault.
    Also I did not get a nissan battery cable. Just cut the existing cable (just after the chassis connection) and made up a short cable that went from chassis to gearbox. Not recommending you do this, but it worked.
    One other thing, there is a process for resetting fault code (done with sequence of pressing accellerator pedal a set number of times). This will not work if there is a accellerator sensor fault - you need to reset code with code reader (dealer or other).
    Again, thanks for your help (above) - saved me a lot of money.


  • #9
    stephan1993
    Registered Users Posts: 2 ✭stephan1993


    Hi everyone, I have a 2003 2.2 SVE TD, and it wont go over 2000ish rpm, there are no strange noises or any warning lights on the dashboard. The fault code is p0120 which my friend said is the throttle position sensor or accelerator position sensor. I went to Nissan dealers they asking £450-£1000 depending on what need to be done.

    If someone could help me, I would really appriciate!!!

    Thanks


  • #10
    Chimaera
    Registered Users Posts: 1,652 ✭✭✭Chimaera


    Have you checked the things listed earlier in this thread?

    It's a pretty standard failsafe when there's a problem with drive-by-wire accelerator systems that the engine is speed limited.


  • #11
    stephan1993
    Registered Users Posts: 2 ✭stephan1993


    Hi, i just checked the the negative wire going from the battery to the chassis then to the gearbox they look ok but im not sure!!!
    Should I change the wire and check? and also where is the throttle body so I can can check if the wires on that are ok!

    Thanks


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  • #12
    mickey02
    Registered Users Posts: 3 ✭mickey02


    can anyone tell me the throttle sequence for my 2002 Nissan x trail after I fitted new pedal [used] thanks mickey02


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