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

Generic
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Pressure Control Solenoid "A" Performance/Stuck Off

GM
Type:
    Powertrain - Transmission - ISO/SAE Controlled
Description:
    Pressure Control Solenoid Circuit Low Conditions
Cause:
    Engine running, then the PCM detected, twice per vehicle trip, voltage monitored at circuit 1530 of under 2-2.5v with the line pressure actuator switched off by the PCM