Vehicle Electronics

Discussion in 'Tech/Mech General' started by snuggly wuggly, Jan 10, 2016.

  1. snuggly wuggly

    snuggly wuggly Funster

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    Hi All


    Our Injector Light has appeared on the dashboard (2001 Hobby 750 Fiat Ducato) no loss of power, after going to several garages including a Fiat one, to get the computer re-set ‘ODB2 Port’, we eventually found a lead which generates it's own power, so with the new plug the computer now recognises the problem but has created another one!!! It’s NOT the Injector Light as shown, it’s an Engine Fault, so when plugging the computer back in with the new lead it now shows ‘Cooling fan low speed fan relay P0480’, so after that long story, does anyone know where it’s located?!!

    Any help would be greatly appreciated.

    Tony
     
  2. Jaws

    Jaws Funster Life Member

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    What happens if you just reset it ?
    Does it come back ?
     
  3. holdsworth ranger

    holdsworth ranger Funster

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    hi there

    there are 2 fan relays, a low speed and a high speed, in a box near the centre/top of the radiator.They are controlled by the engine ecu.First pull the plugs and give them a good soaking with contact cleaner.

    Cheers - mike
     
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  4. snuggly wuggly

    snuggly wuggly Funster

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    Thank you both for your reply, yes it just comes up with P0480, I'll take a look tomorrow, thanks for that.

    Tony :)
     
  5. pappajohn

    pappajohn Funster Life Member

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    Its never that simple.
    The code description may show cooling fan relay but it could be caused by a myriad of problems shown below.

    The generic code for fans is p0480
    For the low speed fan its code p0481 and for the high speed fan its p0482


    The causes for this DTC may include:

    Faulty fan control relay 1
    Fan control relay harness is open or shorted
    Circuit electrical connections poor
    Faulty cooling fan 1
    Faulty coolant temperature sensor
    Fan cooling fan harness is open or shorted
    Cooling fan circuit poor electrical connection
    Intake air temperature (IAT) failure
    A/C selector switch
    A/C refrigerant pressure sensor
    Vehicle speed sensor (VSS)
     
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