2008 F430 Gas Cap Sensors? Check Engine Light On. | FerrariChat

2008 F430 Gas Cap Sensors? Check Engine Light On.

Discussion in 'Technical Q&A' started by Antmoney, May 7, 2022.

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  1. Antmoney

    Antmoney Formula Junior

    Feb 12, 2009
    277
    Miami Beach
    Full Name:
    Anthony
    I own a 2008 F430. Check engine light is on and it’s been determined is sensors in gas cap. Does anyone know what these sensors are for? What they are called? What are OEM part #’s? Is this a simple fix? Car is running perfectly with zero issues. Any help anyone can provide, would be greatly appreciated.
     
  2. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    5,561
    Central NJ
    Full Name:
    Dominick
    Someone is playing with you ..no such thing of sensors in gas cap


    Maybe a translation thing ?

    The cap can be leaking around seal which causes a CEL ..

    Check engine light can come in if cap is missing or not sealing right



    Sent from my moto g power using Tapatalk
     
  3. Antmoney

    Antmoney Formula Junior

    Feb 12, 2009
    277
    Miami Beach
    Full Name:
    Anthony
    Not playing with me. This is my FERRARI specialist. I think it is a translation deal. But I could’ve swore he said there are sensors Ian’s it might be something with seal. But asked him, do I need a new gas cap. He said no and said two sensors need be replaced. Trust me, my guy is legit. My car has 5k miles on it, took it to FERRARI dealership, which I won’t name, and keep it short, dealership hits me with a $22k bill and says you need a new F1 system. I said no way and don’t do anything. I found a FERRARI specialist, take car to him, he checks everything, and says you need a new relay in the F1 system. $400 part plus labor. $600 total repair. So I know to check things, but fortunately, found three right guy, and I don’t have to worry about the BS anymore. I probably just need a better explanation, but figured I’d ask Fchat world.
     
  4. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    5,561
    Central NJ
    Full Name:
    Dominick
    Ok

    That makes more sense ..

    Probably he was referring to EVap solenoid valves or the ventilation valves


    What codes were you getting ..

    Didn't mean to come off wrong .. you are in the right place ..we just need a little more info

    Sent from my moto g power using Tapatalk
     
  5. Antmoney

    Antmoney Formula Junior

    Feb 12, 2009
    277
    Miami Beach
    Full Name:
    Anthony
    I think solenoid valves sound familiar. What does that do? I’d have to ask about codes.

    All good. I appreciate the response and help.
     
  6. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
    11,484
    Sydney
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    Ian Riddell
    #6 Qavion, May 7, 2022
    Last edited: May 7, 2022
    Can't find anything in the parts manual which would indicate a sensor near/in the gas cap and I don't know why you would need two. The F430 wiring diagrams show a test pump, but no pressure sensors.

    On a basic automotive level, the anti-evaporation system has various electronically controlled valves and a test pump which pressurises the fuel anti-evaporation system. The pump tries to maintain pressure and the time the pump is running determines how much pressure you are losing.

    https://www.liveabout.com/leak-detection-pump-ldp-4083816

    The fault code may pinpoint a particular element of the system. Your tech's scanner (Ferrari "SD3" or similar) will pick up the codes.

    CAVEAT: Of course, the manuals FChat have access to are not always up to date or accurate. Ferrari may have added something special to the system.

    The parts catalogue shows various components:

    https://www.eurospares.co.uk/Ferrari/430/F430_Coupe_(USA)/PartDiagrams/0012/EVAPORATIVE_EMISSIONS_CONTROL_SYSTEM

    The price for an anti-evap test pump is around US200 plus taxes and shipping.

    The valves may be item #18 in the parts manual.
     
    flash32 likes this.
  7. Antmoney

    Antmoney Formula Junior

    Feb 12, 2009
    277
    Miami Beach
    Full Name:
    Anthony
    Thanks for info. I think next move is to talk to owner of shop, who is the one that handles my car. Get exactly what issue is, so I’m not guessing, and write it down. Write down what parts are needed and labor to handle. I can circle back, when I have that info, and respond back from there. Appreciate the help.
     
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  8. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
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    Ian Riddell
    There are two PCM's (or "Bosch/Motronic engine ECUs" as we call them) on the F430. The Left Hand ECU seems to be in control of the anti-evaporation system test pump. Power for the pump and the valves comes from fuse PSF12 behind the left hand seat. Do you know if your tech has checked this fuse?
     
    flash32 likes this.
  9. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    5,561
    Central NJ
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    Dominick
    #9 flash32, May 7, 2022
    Last edited: May 7, 2022
    Here is a description of how the EVAP system works .. it mentions the two valves I mentioned above
    There are 2 vent valves and 2 purge valves -
    Get the code and we can go from there

    The vapours coming from the tanks are carried, though special ventilation valves, into a separator, where
    they condense and are carried back to the tanks.
    Fuel vapour is fed from the separator into the active carbon filter, where it is absorbed and retained.
    With the engine running and in relation to operating conditions, the Motronic ECU operates the canister
    flushing solenoid valves so that the fuel vapour trapped in the active carbon filter is aspirated by the intake
    manifolds via specific pipes.
    Atmospheric air is pumped into the active carbon filter by an air pump controlled by the ECU, which is
    preceded by a filter to prevent foreign objects from entering the system.
    The diagnosis pump cyclically pressurises the entire evaporative emissions control system, in order to detect
    any possible leaks.
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  10. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,344
    The Cold North
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    Tom
    Smoke test the EVAP system. Normal and common are the roll over valves. Secondary issue are fuel pump housing leaks. But you would have a fuel smell if either were and issue. If smoke test shows no leak..more then likely you have a purge valve leaking. There are 2..so if that turns out to be the case..replace both.
     
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  11. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
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    Well, this is interesting...

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    What is this mystery fuel pressure sensor? There was a fuel pressure sensor on some 360's fitted to the top of the right hand tank:

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    Code P0442 has dozens of hits on the 360/430 sub-forum, some faults solved by tightening the fuel cap.
     
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  12. greyboxer

    greyboxer F1 World Champ

    Dec 8, 2004
    12,282
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    Jimmie
    Over the years this has been a classic new owner issue
     
  13. wmuno

    wmuno Formula Junior
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    Dec 24, 2007
    430
    Wilmette, Illinois
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    Bill Muno
    Here's a generic diagram of the vapor recovery system. If the vacuum in the system is out of spec, you get a check engine light. A loose gas cap is a very often the common reason for a warning light, but any leak in the lines or components will result in a warning.

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  14. Antmoney

    Antmoney Formula Junior

    Feb 12, 2009
    277
    Miami Beach
    Full Name:
    Anthony
     
  15. Antmoney

    Antmoney Formula Junior

    Feb 12, 2009
    277
    Miami Beach
    Full Name:
    Anthony
    I will ask, but pretty sure I remember tech/shop owner it wasn’t cap tighten deal.
     
  16. Ferrari Tech

    Ferrari Tech Formula 3

    Mar 5, 2010
    1,114
    Georgia
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    Wade Williams
    PM sent, feel free to reach out. I am happy to help you.
     

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