so I have a 96 acura integra ls sedan and I just 2 days ago put in a itr p73 003 ecm and now my obd2 plug for the scanner tool wont connect for me to clear a check engine light that was previousl on my old p75 the check engine was from a o2 sensor which I bypassed by putting in a test pipe and the itr ecm would also make the car not read that unplugged 02 sensor. so can anyone tell me why the hell my obd2 connect plug wont allow a scan tool to connect after the swap I checked all fuses and all are good engine and inside the car I'm at a loss for what it is cause it worked fine before the swap on ecms so if anyone as an answer u can message me on here or my email darksid3honda2015@gmail.com or on facebook https://www.facebook.com/dalton.bauer.792