error code

[rattlindodge]

I got an error code in my 98 2wd 318 gasser auto, P0720
Low Output Speed Sensor RPM Above 15 M.P.H.,

ANyone know whats wrong with it, i tryed to clear the code with my scanner but it came back. I know its not a diesel but Id figure id give it a try.

 

[BgBlDodge]

If it's setup like mine, it's the rear speed sensor on top of the rear axle.