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P30 ECU (OBD1 or OBD2)

Discussion in 'ECU's, Electronics, and Tuning' started by schemo24, Mar 19, 2007.

  1. schemo24

    schemo24 New Member

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    Ok here's the deal..............I bought a complete swap B16A2, tranny, and P30 ECU. Only thing is that the guy i bought the engine from couldn't tell me what year Civic it came out of. All i know is that the Civic was a VTI (Euro Spec 1992-2000 Honda Civic) EDM VTi (EK). I'm trying to figure out how to tell if the ECU is either OBD1 or OBD2. Is there any physical way i can figure this out? Please if someone can help let me know i would like to start getting some stuff for the rebuild. Thanks!!!!
     
  2. eg6sir

    eg6sir Supa Mod Moderator VIP

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    well, there is an obd1 and obd2 p30 ecu.. if you say its a b16a2, its obd2 ..
     
  3. schemo24

    schemo24 New Member

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    the thing that gots me confused is that in EDM Civics the B16A2 was used in the following years 92-00'. I'm pretty sure if it's before 95' it would be OBD1 but after 95' will be OBD2. So the questions is which one is it? Are the codes on the P30 label both the same for OBD1 & OBD2? I'm thinking the only way to tell is by the codes at this point???
     
  4. eg6sir

    eg6sir Supa Mod Moderator VIP

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    take a pic of where the plugs go and post it up. .
     
  5. schemo24

    schemo24 New Member

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    here's the pics. in one you can see it's stamped showing 92' but not sure if thats that year of the ecu? can you guys tell by the plug inputs?

    does anyone here have a P30 both obd-1 and OBD2 so i can see the difference?
     

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  6. eg6sir

    eg6sir Supa Mod Moderator VIP

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    thats obd1 and i'm guessing its a JDM ecu
     
    Last edited: Mar 20, 2007
  7. schemo24

    schemo24 New Member

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    cool, but how can you tell? it came out of a EDM car do they use the same ECU's , meaning EDM's use JDM's ECU's?
     
  8. eg6sir

    eg6sir Supa Mod Moderator VIP

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    which ever one it is.. i just saw the stamp that said 92 and i know there was a b16 in a USDM car until 94 i believe
     
  9. TheManRSW

    TheManRSW TheManRSW

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    I have an obd1 b16a2 (j-spec)...if it is a b16a2 with a p30 it could quite possibly be either.
     
  10. schemo24

    schemo24 New Member

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    that's the problem i don't know which one it is? aren't the plug inputs different from OBD1 vs. OBD2?

    i really don't want to go off a stamp on the ECU. i need real proof so i can go ahead and buy a conversion harness or not.

    and the engine is a B16A2 which i believe can be either or OBD versions. B16A is only OBD1 for sure.
     
  11. schemo24

    schemo24 New Member

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    from what i know a B16A2 can be either or since they range in so many year in the EDM side. This is what i need to know so i do go out and buy a conversion harness for nothing.

    a B16A motor is OBD1 for sure

    also i just don't want to go off a stamp. shouldn't someone be able to tell just by looking at the plug inputs? since the harnesses are different?
     
  12. jdmh22a

    jdmh22a New Member

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    the ecu should have a part number on it , check with honda
     
  13. pissedoffsol

    pissedoffsol RETIRED

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  14. schemo24

    schemo24 New Member

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