Thread: P0443 and P0102 after spark plug change

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  1. #1 P0443 and P0102 after spark plug change 
    Donating Users Deezul_AwT's Avatar
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    Tried to change my plugs this morning, but it was hot and I couldn't rotate the engine forward enough. During the work, I removed my K&N filter hoping that would give me some more rotation. It didn't give much, so I decided to call it a day. Anyway, when I took the car out, SES light was on, and it's throwing wo codes - P0102 and P0443. My filter does need to be cleaned, and I've replaced the MAF once with a junkyard one, so that's what may be throwing the P0102 code. But I have no idea what I hit or bumped that would throw the P0443. The car runs fine, but I did see when I was coasting that the tach would bounce between 1200-1800 RPMs. Could replacing the MAF fix the P0443 code as well? I've also seen that P0443 is thrown when there's a bad connection the on PCM. So maybe I jostled something there?

    DTC P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency
    DTC P0443 EVAP Purge Solenoid Valve 1 Control CKT
    2016 Ford Fusion Energi Titanium - Still trying to figure out what I can do
    2006 Mercury Mariner Hybrid - K&N Drop in filter. Not much else you can do...
    TOTALED 9/2016 - 2004 Impala SS
    SOLD 3/2013 - 2000 Grand Prix GT
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  2. #2 Re: P0443 and P0102 after spark plug change 
    donated to get this wow TorqueAutoMotiv's Avatar
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    if i remember correctly the evap solinoid is on top of the engine in the back you may have bumped it reaching for the plugs

    98 gtp sedan forest green ,S1X intense cam,Intense pcm,Magnaflow exhaust, ubend delete,TEP trans 3.29's,3.4 smoothflow mps,Dyno'd 281hp and 371ft #'s of trq at the wheels
    http://www.cardomain.com/ride/3338681
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  3. #3 Re: P0443 and P0102 after spark plug change 
    GT Level Member mikedinthecity's Avatar
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    yea maybe look for vacuum leaks..i cant see it being too much else if the codes werent there b4 u were in there......
    2000 Daytona 500 GTP. fender well intake K&N, 180 tstat, flipped dog bones, strut2strut brace, sd headers coated n wrapped, 3in dp, 3.25 pulley, pcm tune, led tails, angel eye halos w 100 watt h1s, p&p heads, p&p m90, yella terra alum roller rockers, head studs, 8mm wires, al104s, 2007 l26, 329s hd diff, alum sub frame
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  4. #4 Re: P0443 and P0102 after spark plug change 
    Donating Users Deezul_AwT's Avatar
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    Just an update, can believe I didn't check sooner. I cracked open the manual, as the engine fuse cover is pretty bare on details regarding which fuse does what. Manual stated one the fuses handle MAF and fuel solenoid. Found the fuse, a regular 15 AMP one. Pulled it out, blown. I feel like an idiot for not looking into the fuses more, as I would have fixed the problem immediately instead of fretting about doing a wiring trace. I have some spares in my car, so dropped a new one in, no code. Sometimes the simple solution is the correct solution.
    2016 Ford Fusion Energi Titanium - Still trying to figure out what I can do
    2006 Mercury Mariner Hybrid - K&N Drop in filter. Not much else you can do...
    TOTALED 9/2016 - 2004 Impala SS
    SOLD 3/2013 - 2000 Grand Prix GT
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