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    super malibu's Avatar
    super malibu Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 30, 2009, 10:10 PM
    I got a p0171 code
    Okay I have a 1996 ford aerostar I got a code p0171.. so far I get it's a has to do with m.a.f. mass air flow.. the o2 sensor test fine.. so I know its about 200 buks for new m.a.f.how do I test it ? Can it be tested ?to make sure that's what I need.. thanks
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Oct 1, 2009, 04:14 AM

    Cleaning the MAF Sensor will likely solve the problem:

    https://www.askmehelpdesk.com/cars-t...ml#post1377134

    Afterwards, clean the air box, wipe it down with a damp cloth, allow it to dry, and install a new air filter.
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #3

    Oct 2, 2009, 12:33 PM

    If the MAF was the problem, you should be getting the P0171 (bank # 1 lean), but you would likely also have a P0174 (bank # 2 lean).
    If cleaning the MAF doesn't work, check for a leaking intake plenum or perhaps a leaking intake gasket.
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