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  1. #1
    ephatch member
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    How to reset ECU

    I've installed injen cold air few day ago. Do I need to reset ECU. If yes, anybody know the best way how to do that????

  2. #2
    My civic is go chubbychu's Avatar
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    take the black wire off the battery for a couple mins.
    Formerly known as Plainol2k2si

  3. #3
    ephatch member
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    I've heard that there is a different way to reset ECU except unpulging the batterry. Anyone??

  4. #4
    Back to Honda Civicvtec1ps's Avatar
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    Just take out the ECU Fuse and put it back on couple minutes later.

  5. #5
    haha whats a modorator? estebones's Avatar
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    would he have to reenter his radio code? how will this affect other things like the mileage display? just curious.

  6. #6
    Back to Honda Civicvtec1ps's Avatar
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    Originally posted by estebones
    would he have to reenter his radio code? how will this affect other things like the mileage display? just curious.
    If you disconnect battery, You will need to reset your radio.
    Milege shouldn't matter.

  7. #7
    ephatch member
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    When I take out the ECU Fuse should I start the engine for couple of minutes, or I've to do that when the the engine is off???

  8. #8
    ephatch member
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    Anybody knows what do I have to do except taking out the ECU fuse???
    Is this really good way to reset it???

  9. #9
    heh heh.. "member" BarracksSi's Avatar
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    It's what the service manual says to do. Page 211.

    Sounds weird to me, too, but if Honda says so, then it must be the way to do it.

  10. #10
    ephatch member
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    My manual has on this page how to change a bulbs in interior lights.
    Can anybody tell me the best way to reset the ECU, because takeing the black wire off the battery for a couple mins sounds for me not real.

  11. #11
    heh heh.. "member" BarracksSi's Avatar
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    The one I'm reading from is the first edition, dated August of 2002, with a green cover. It's 1139 pages in the PDF that I've got. This particular page is #211 of 1139, and the indicator in the bottom corner reads 11-4.

    Quote:
    "Turn the ignition switch OFF, and remove the No. 6 ECU (ECM) (15A) fuse (A [in the manual's diagram]) from the under-hood fuse/relay box for 10 seconds."

    No need to disconnect the battery for this one. The other option is to use an OBD II scan tool.

    Trust me on this -- I'm not gonna pass bad info about the ECU. If I didn't know, or couldn't find out, I wouldn't have posted in the first place. I'll even post a screenshot of that page:


  12. #12
    ephatch member
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    Thanks BarracksSi for another good post. I trust you man, and thanks to your post about how to: disable ac I can finally turn off AC when I'm defrosting front window!!!!

    Thanks man!

  13. #13
    heh heh.. "member" BarracksSi's Avatar
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    No problem -- every once in a while I get things right.

  14. #14
    nothing to see here Slip_Angle's Avatar
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    Why reset?

    I put on a new air intake and midpipe and didn't bother to reset the ECU. Won't the ECU just learn the new intake and exhaust output / input and adjust accordingly?

  15. #15
    ephatch member
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    I heard that it will learn, but it will take an Ep3 some time, so it's much faster to reset it in 10sec !!!

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