Ford
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    OSS Sensor Noise Interference Conditions
Cause:
    Engine running, VSS more than 1 mph and the PCM detected noise interference on the OSS

Generic
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Output Speed Sensor Circuit Range/Performance

GM
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Vehicle Speed Sensor Circuit Performance Conditions
Cause:
    Engine running, VSS Noise codes set (parameter status equaled Yes), then the PCM detected, twice per ignition cycle, a VSS input of over 15 mph for 1 second.