The meaning of B1420 Code is necessary to know for solving the problem of the engine. The body part of the engine seems main problem and for solving this problem, no component is necessary to change. You should check the fuel pump occasionally not preparing when you turn the key on. You should start by checking the fuel compression and scrutiny whether the engine connection have bright white-bluish spark at all 4 plugs. The mechanical timing is also somewhat that you should verify, as we stated above. When you get B1420 engine fault code on your engine code reader this report will help you.