Cylinder identification ( CID ) circuit failure ( according to my Haynes manual )
Thermostat malfunction.
bad vehicle speed sensor
Trouble code P0401 means: Exhaust Gas Recirculation Malfunction
Catalist efficiency below threshold -Bank 1
Trouble code P1507 means: Idle air control (IAC) underspeed error
Trouble code P0125 means:Insufficent coolant temperature for closed loop fuel control
9352 is not a valid OBDII code for any vehicle.
Trouble code P1507 means: Idle air control (IAC) underspeed error
If you are refering to the OBD-II code 791 or P0791 it is refering to the Intermidiate Shaft Speed Sensor Circut A.
Your # 1 engine cylinder is MISFIRING The engine cylinder locations on your Ford Explorer Sport Trac are numbered : firewall 3 - 6 2 - 5 1 - 4 front of vehicle
It is aturbine\speed sensor malfunction. It usually means that this speed sensor has gone bad. Good luck.
Cylinder 5 is missing