FC 30 - No normal signal is received from lean angle sensor

My 2008 WR250X won't start.  I rode it the day before with no problems at all, loaded it up for a ride then it wouldn't run the next day.  The fuel pump primes and it cranks hard.  It runs for a while when carb cleaner is sprayed into the air box, so I'm getting fire.  

I checked fuses, and just saw the sticky about the loose plug behind the radiator and will check this evening, but I don't think the symptoms are the same.  I think it's a fuel kill switch.

The fault code 30 - "No normal signal is received from the lean angle sensor" thrown and returns when I clear it.  The diagnostic code 08 - Lean Angle Sensor returns .6v upright.  I removed the sensor and tilt it and it goes increases to 4.xx.  So I think the sensor itself is working properly.  

Any thoughts on course of action to trouble shoot would be much appreciated.  

Thanks