I used a butt splice to connect my VSS wire to my 6000 NEX, and for some reason the navigation keeps going into "Hybrid Mode" with an error message. I'm positive I have the VSS wite on the ECU. Any suggestions?

What kind of car do you have? Does the diagnostic screen show it as OK, and it changes? Does it seem to happen when you go over bumps or the temperature is one way or another? Have you rejoined the wires to make sure the connection is solid?

2001 Integra GSR. It does it all the time regardless of bump, temp, etc etc. i have it connected as my ecu end in one side of the butt, and my vss wire from the head unit and the other end of the ecu vss wire twisted together into the butt splice. Did it the same way on the last 3 cars this head unit was in with zero issues.