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  1. #1
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    Default Error code p0172 after stage 2 flash

    Anybody have any error codes pop after stage 2 flash?. I have a 2018 F3s. Did stage 2 flash, cat delete, and K&N air filter. After about a week, check engine light came on and shows code p0172. Any help would be greatly appreciated.

  2. #2
    Very Active Member Ex-Rocket's Avatar
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    PO172 ECM System too rich Bank 1



    2017 F3 Limited in Intense Red Pearl

    2008 Triumph Rocket (SOLD)

    2002 Honda VTX 1800 C ( SOLD)

    2014 Triumph Thunderbird Commander

  3. #3
    Very Active Member troop's Avatar
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    P0172 Possible Causes
    ----------------------------------------
    What does this mean?

    Faulty Front Heated Oxygen Sensor
    Faulty Spark Plugs
    Faulty Mass Air Flow (MAF) sensor
    Exhaust Gas Leaks
    Ignition Misfiring
    Incorrect Fuel Pressure
    Faulty Fuel Injectors

    I'm guessing Monster/Wick-It is going to have to scan/reflash your ECU. Dealer won't help with your flash. Kind of a PIA Good luck


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  4. #4
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    Going to try replacing o2 sensor. Will post if it works.

  5. #5
    Active Member 308gunner's Avatar
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    Quote Originally Posted by jjpgator View Post
    Going to try replacing o2 sensor. Will post if it works.
    Question...do you use premium gasoline..or regular.

  6. #6
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    Yes. Have tried regular and still having the problem

  7. #7
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    Contact whoever has done your ECU flash and see what they say.

  8. #8
    Very Active Member troop's Avatar
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    It's been 12 days. You have contacted the the place that did the flash, haven't you ??


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  9. #9
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    Yes. I have sent 2 emails and no response. I put the cat back on and changed the O2 sensor. After about 2 weeks the check engine light went off.

  10. #10
    Very Active Member troop's Avatar
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    Who did the Stage 2 flash ?


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  11. #11
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    Wick-it

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