The car engine should be fixed by an automobile engineer and when the car engine is tested, the car engine P1490 Code is found. The engine helps to solve the car engine. You should check all symptoms of the car engine problem and check the car engine. By the real meaning of the code, you will get the location of the car engine problem. You should also check the car engine. You should check the check list Manifold Absolute Pressure/Barometric Pressure Circuit High Input, Turbocharger Boost Sensor A Circuit Low and Glow Plug/Heater Circuit ‘A’ Malfunction. Do not drive the car until the car engine is ok.