The engine P1403 DTC is exactly mentions to the camshaft timing. In this case, if the cam timing is over-retarded, the engine light will be illuminated and the engine code will be set. The engine P1403 Code is set in many car engines and by the correct meaning, the car engine can be fixed. The crank but will not start illness, along with the trouble codes may make you think you have got a PATS anti-theft system problem. Check the car engine by Throttle/Pedal Position Sensor or Switch A Circuit Intermittent, Injection Pump Fuel Metering Control ‘A’ High (Cam/Rotor/Injector) or exhaust Gas Recirculation Sensor B Circuit High.