Trouble code PO402 is a generic (all car makes) code meaning "Exhaust Gas Recirculation- Excessive Detected". It means that the computer detected an abnormal or unexpectedly high rate of air flow in the exhaust gas recirculation emissions system.
Trouble code P1507 means: Idle air control (IAC) underspeed error
Trouble code P0152 means:O2 sensor circuit high voltage (Bank 2 Sensor 1)
Thermostat malfunction.
Trouble code P0775 means:Pressure control solenoid "B"
In a 1997 Ford Explorer : Control Trac is Fords name for the 4x4 system , with the 2 speed transfer case ( it has a LOW RANGE that can be used off-road )
Trouble code P0775 means:Pressure control solenoid "B"
Trouble code P1260 means: Theft Detected, Vehicle Immobilized
Trouble code P0401 means: Exhaust Gas Recirculation Malfunction
transmission control circuit out of test range
bad vehicle speed sensor
Catalist efficiency below threshold -Bank 1
(kam) KEEP ALIVE MEMORY TEST FAILURE