Ford
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    OSS Sensor Circuit Intermittent Conditions
Cause:
    Engine running, VSS signal more than 1 mph, then the PCM detected that the OSS signal was irregular or that the OSS signal was interrupted

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