Transmission issues after 1nzfet swap

[Huevito]

Hello I recently completed my first project engine swap and have my second gen sedan rolling but my issue now is my transmission, code p0500 I swapped out the sensor(s) and no luck. So the story to it is I kept the JDM transmission that came with the motor since almost all of the connections and sensors matched the US transmission, the only problem was the JDM transmission had a port cover where the speed sensor is located I removed it and installed the transmission speed sensor from the US transmission and now my car will not shift past 3rd gear. I was eventually going to swap to a manual transmission but for transportation reasons I needed to drive is sooner than expected. Anyway any help would be greatly appreciated thank you! Oh it’s an automatic transmission just in case you didn’t catch that. 😎🤙