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.
It is aturbine\speed sensor malfunction. It usually means that this speed sensor has gone bad. Good luck.
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
Cylinder 5 is missing