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How to tell on ECU what OBD that it is.

Discussion in 'ECU's, Electronics, and Tuning' started by 95hatchcx, Apr 1, 2004.

  1. 95hatchcx

    95hatchcx Member

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    The reason i am asking is because i received an OBD1 B18ls
    they sent me a pr4, that won't work will it?
     
  2. whiteLS

    whiteLS Senior Member

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    according to the REFRENCE section on this site that is either odb0 or odb2 ecu for the ls
     
  3. Slammed90Lude

    Slammed90Lude Senior Member

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    how many plugs receptacles does it have?

    -2 plug receptacles mean it's OBD 0
    -3 mean it's OBD 1
    -4 would ean OBD II
     
  4. LOS222

    LOS222 Member

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    wrong. You cannot tell if it's obd1 or obd 2 by how many plug receptacles it has. I currently am running a JDM obd1 p13 ecu in my accord and it has 4 plug receptacles. Can't help you w/ the obd0 though.
     
  5. Slammed90Lude

    Slammed90Lude Senior Member

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    ok, a PR4 that is obd 0 WILL have two plugs and an OBD I PR4 will have three plugs- how's that?
     
  6. 95hatchcx

    95hatchcx Member

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    i have a PR4 that is two plugs and on that is 3 plugs

    it says in the reference section that a PR4 is either OBD0 or OBD1
     
  7. Slammed90Lude

    Slammed90Lude Senior Member

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    I was TRYING to tell this dude that if his PR4 was OBD I it would have three plugs, sorta like this:
    [​IMG]


    but i wouldn't know anything about that would I? considering this ECU is sitting on my dresser
     
  8. 95hatchcx

    95hatchcx Member

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    so a 3 plug PR4 is obd1?

    they don't post one as obd1 in the reference
     
  9. Slammed90Lude

    Slammed90Lude Senior Member

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    yeah i know- but that I bought that PR4 up there with three plugs and it ran an OBD I motor in my buddies hatch
     
  10. 95hatchcx

    95hatchcx Member

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    hmotorsonline sent me a PR4 with my B18b ls obd 1 and i wasn't sure if it would run it or not
     
  11. Slammed90Lude

    Slammed90Lude Senior Member

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    well does it look just like the picture of the ecu up there? because if so you shouldn't have a problem
     
  12. pissedoffsol

    pissedoffsol RETIRED

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  13. Projectzc

    Projectzc Senior Member

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    I love the back and forth I think this I think that. Then one simple link solves it all. The power the the internet!
     
  14. LOS222

    LOS222 Member

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    yeah good post pissedoffsol. I didn't mean for you to take it personally slammedlude, my appologies. I ran into this same question awhile back and didn't want him to have the same problems.
     
  15. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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  16. katman

    katman Member

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    Honda made 3 OBD1 LS ecu's all of which have the same programming:

    PR4 (which was also the same part number used for OBD-0 LS ecu's too)
    P74
    P75

    Just look at the ecu plugs (as seen in E_SolSi's image) to distinguish an ecu's OBD type.
     
  17. JDMilan

    JDMilan Senior Member

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    :werd: I WAS going to post up that E has a good pic of the odb's
     
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