F430 Fault Code PO442 | FerrariChat

F430 Fault Code PO442

Discussion in 'Technical Q&A' started by Stevemogg, Sep 22, 2022.

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  1. Stevemogg

    Stevemogg Rookie

    Sep 22, 2022
    1
    Leigh, Lancashire
    Full Name:
    steve mogg
    I have an engine management light on with an error code of PO442 - Evaporative Emission System leak detected (small leak)
    Does anyone have any indication to what fault this may point to.
    The car drives completely normal at present.
     
  2. flash32

    flash32 F1 Veteran

    Aug 22, 2008
    5,691
    Central NJ
    Full Name:
    Dominick
    Check gas cap

    Sent from my moto g power using Tapatalk
     
    Circle K likes this.
  3. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    38,085
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
  4. windsock

    windsock Formula 3
    Rossa Subscribed

    Nov 29, 2006
    1,070
    Common and there are three areas we see issues with beyond a loose gas cap on both the 360 and 430. First is cracked lids on the fuel pumps. Second leaking gaskets or cracked rollover valves. Third stuck purge valves, usually with carbon from the charcoal canister. System should be smoke tested under pressure to trace the source of the leak. If its a spider it a crappy job as to access the rollover valves requires removal of the convertible top cartridge.
     
    Qavion and flash32 like this.

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