Ford
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Shift Solenoid 1 Circuit Conditions
Cause:
    Engine running in gear with VSS signals received, then the PCM detected an open or shorted condition in the shift solenoid 1 circuit with the solenoid energized

Generic
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Shift Solenoid "A"

GM
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Shift Solenoid 1 Performance (MS7 4-Speed Transaxle)
Cause:
    Engine running, vehicle in Drive at cruise speed, then the PCM detected that the Actual gear did not match the Commanded gear.

Nissan
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    AT - shift solenoid A - voltage low
Cause:
    Wiring, solenoid A, TCM