The engine P0202 Code is very meaningful but it is related with the car engine. This code is called Injector Circuit Malfunction – Cylinder 2. When any problem occurs in the car engine, then the engine code appears on the screen of the car engine reader. The problem may occur due to several reasons. Those reasons are Failing or failed cylinder 2 fuel injector, Faulty ECM, Open or short in the wiring harness for the cylinder 2 injector circuit and Poor or broken electrical connection. Now it is necessary to check the car engine problem according to the symptoms related with the reason of the car engine.