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What is the difference between OBD2A and OBD2B?

Discussion in 'Tech Archive (No Posting)' started by treysawyers, Mar 13, 2005.



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  1. treysawyers

    treysawyers New Member 5+ Year Member 10+ Year Member

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    I have a 98 honda civic DX, and i have a 2000 acura B18b1 LS engine i want to swap in and i need an ecu. Can someone tell me the differences in OBD2 A & B so i know which one i can use. Most likely im going to use the engine harness that is already in the car. but i also have the Engine harness from the LS as well. Can i use a 96-99 ecu on my engine? or do i have to get a 2000-2001?
     
  2. Shiznit

    Shiznit Stickin it to the Man Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    OBD2B
    • 2000-2001 Acura Integra
    • 1999-2000 Honda Civic
    • 1998-2002 Honda Accord

    OBD2A
    • 1996-1999 Acura Integra
    • 1996-1998 Honda Civic
    • 1996-2001 Honda Prelude
    • 1996-1997 Honda Accord
     
  3. iamcivic

    iamcivic zdnfhsz fhz Registered VIP 5+ Year Member 10+ Year Member

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    They have different plug designs.
     
  4. treysawyers

    treysawyers New Member 5+ Year Member 10+ Year Member

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    IS the plug designs different on the engine itself or is it different under the dash board?
     
  5. iamcivic

    iamcivic zdnfhsz fhz Registered VIP 5+ Year Member 10+ Year Member

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    Where the harness plugs into you ecu its dfferent. The ecu is found in the passenger side corner of the car. the design of an OBD2A has a plug, a blank space, a plug and a plug. OBD2B has a plug, a plug, a plug, and a blank space.
     
  6. knightxrider1

    knightxrider1 New Member Registered VIP 5+ Year Member

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    bump an old thread, i know the design is diff. but im running a 00Y8 motor with a 96Y8 ECU and engine harness. it doesnt feel as strong as my old motor and jerks violently at times and runs funny. like its choking for air or something. would like to know the difference between the two and if i could use my 96 ecu plugs and just plug it into a 99-00 ecu. thnks. you know me. noob all day!
     
  7. 2slo4u

    2slo4u wait4me Registered VIP Registered OG 5+ Year Member 10+ Year Member

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  8. knightxrider1

    knightxrider1 New Member Registered VIP 5+ Year Member

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    anyone else?
     


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