OBD2 Port not working

There is already a post about this from a few years ago, but no one responded. Let's hope that doesn't happen here.

I just bought all new TPSM sensors with my new tires from Discount Tire and they weren't able to register the new sensors with the trucks computer because they couldn't connect. They plug into the OBD2 port, turn on the vehicle, and it tries to connect, then it just doesn't connect. I checked the OBD2 fuse and power outlet fuse and any other fuses I saw suggested across the internet, I pulled the OBD2 port out of the bracket and down to make sure they were connecting well, I got them to try a different scanner, and none of it worked. Eventually they gave up and suggested I go to the Toyota Dealership.

Anyone have any experience with this? Or have something to check or fix that I'm missing?

 

No experience here, but have read other threads.

Either bad wiring or bad ECM.

Check the ECM to make sure everything is plugged in completely.

For the ECM itself, try and find a used one (same part number) and swap it in.

 

If it were a bad ECM wouldn't I be having other issues?

 

Not always, apparently. Read this thread for an example:
http://www.customtacos.com/forum/127-1995-5-2004/149622-obd2-port-doesn-t-work.html

 

Now the OBDII plugs when they come off the line have a cover which seems to stay in place till the first quicky auto parts pulls the codes.

I have had quite a few failures to communicate just from the pins on the plug being corroded or just plain dirty .

Do the simple things first it is cheaper then throwing parts and just might fix your issue