Ford
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    VSS Circuit Noisy or Intermittent Conditions
Cause:
    Engine running, engine speed above the TCC stall speed, then the PCM detected a noisy or intermittent VSS signal over a period of time The VSS signal comes from the VSS, TCSS, ABS Module, GEM or CTM (module)

Generic
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Vehicle Speed Sensor "A" Intermittent/Erratic/High

GM
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    VSS Circuit Intermittent Input (4T60-E Transmission)
Cause:
    Engine speed above 500 rpm, not in P or N, more than 6 seconds have elapsed since last range selector position change, DFCO not active, OSS signal did not rise more than 500 rpm in 2 seconds, then the PCM detected that the OSS signal dropped more than 1500 rpm, condition met for 2 seconds.