What does error code PO 581 on the Ford Explorer mean?

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

9352 is not a valid OBDII code for any vehicle.

Trouble code P1507 means: Idle air control (IAC) underspeed error

Trouble code P0125 means:Insufficent coolant temperature for closed loop fuel control

If you are refering to the OBD-II code 791 or P0791 it is refering to the Intermidiate Shaft Speed Sensor Circut A.

Cylinder identification ( CID ) circuit failure ( according to my Haynes manual )

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.

Trouble code P0775 means:Pressure control solenoid "B"

Trouble code P0775 means:Pressure control solenoid "B"

For engine error code, it means EGR valve/solenoid malfunction

Trouble code P1260 means: Theft Detected, Vehicle Immobilized

P0340 is error code for Camshaft Postion Sensor Circuit Malfunction

transmission control circuit out of test range

If you mean the entire vehicle then no it will not

ford explorer body type

Trouble code P0320 means: Ignition Engine Speed Input Circuit Malfunction

(kam) KEEP ALIVE MEMORY TEST FAILURE

Code P0715 means:Input/Turbine Speed Sensor Circuit Malfunction

Trouble code P1507 means: Idle air control (IAC) underspeed error

Trouble code P0117 means:Engine coolant temperature circuit low input