I have a P2E ECU and it has pins in all 4 ports. It's not A, C, D or A, B,D only, but A, B, C, D. What is going on here? I recieved the ECU free in a trade, but I want to know what it is since I'm looking to sell it.

 

Automatic ECU I believe.

 

I thought the like P2P was auto, and P2E was 5spd. And I thought OBD2a had pins in ports A,B,D and OBD2b was A,C,D or something along that line.

 

p2p is vtec p2e is non vtec. the 4th plug being in means automatic

 

P2P is not Automatic only - A P2P came stock in my manual 2000 EX. It's the correct ecu for a obd2b d16y8. I believe they came in manual and automatic.

Not sure about P2E, but it definitely sounds like you got an automatic ECU if you've got pins in the automatic plug.