Ford
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Shift Solenoid 3 Performance Conditions
Cause:
    Engine running in gear with VSS signals received, then the PCM detected a mechanical fault in the shift solenoid 3 with the solenoid energized (the valve is stuck off)

Generic
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Shift Solenoid "C" Performance/Stuck Off

GM
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Transaxle Shift Solenoid 3 Circuit Low Input Conditions
Cause:
    Engine running, then the PCM detected that the voltage monitored at CKT 1223 of under 2-2.5v with 3rd Gear Actuator energized (this test must fail twice on one trip to set this code)