The engine P0573 Code comes for the car engine problem and according to the meaning of this code, you can fix the car engine. The engine should be fixed before driving the car. The engine is problematic and you have nothing to worry if you do not know how to solve the car engine problem. You must allow the car engineer for solving the car engine. You should check these reasons throttle or Pedal Position Sensor/Switch A Circuit Intermittent, injection Pump Fuel Metering Control ‘A’ High (Cam/Rotor/Injector) and Exhaust Gas Recirculation Sensor B Circuit High to know the real cause of the car engine problem.