My obd2 port on my 96 civic ex is not working I plug in the bafx 34t5 bluetooth scanntool & the red light indicates it gets power & runs through multiple protocols but wont communicate with the computer. I've tried on my friends 2008 Chrysler 300 & a 2017 Toyota Corolla & it connects immediately
any advice helps

S.N I recently did a motor swap & a new head gasket on the replacement motor

 

What engine/ECU are you using?

 

It wont work if your motor and harness is obd1.

 

I have a d16y5 motor that was swapped in place of my stock civic ex motor. This motor was also used from 96-00 so I assume the odb is obd2 & not odb1. As far as the computer goes I'm not sure its unmarked on both sides except for one bar code & some series of numbers

 

how do I know if the harness is obd1 & is it possible to do a conversion to obd2?

 

https://honda-tech.com/forums/honda-...d16y5-2298590/

You have an hx motor. It uses p2n ecu.. your ecu is p2p.
Not sure what year the motor is from. You need to find out. Then you need an appropriate ecu.

 

much more than just that. hx ecu will want an egr and 5 wire o2. lots of wiring to be done here.

 

1) What country are you in? The D16Y5, according to wikipedia was used in some Civic EX models outside of the US.
2) Take a photo of the engine