The B1513 Code has several senses and it is essential to identify the sense right for solving the problem. Do not try to solve the problem by yourself. You should take it to the professional or auto repairing center. The catalytic converter has an oxygen sensor behind and in front it. When the car is hot and running in closed loop mode for long time, the upstream oxygen sensor wave-form reading must swing. When you see the code B1513 engine error code on the engine code reader this report will help you. Defuse of cylinders is achieved by releasing a synchronizer pin that usually interlocks the cam supporter and rocker arms.