The engine C1852 Code is a short description of the car engine problem and by the real meaning of the engine code, it is possible to solve the car engine. There are some possible causes of the car engine problem. The car engineer has to verify Injector Circuit Malfunction – Cylinders, Crankshaft Place Sensor A Circuit Error and Reverse Input Circuit. Small but serious, a spark plug makes the car move. Its meaning is to burn the beaten fuel in the engine. A damaged spark plug will reason a weak spark. It is necessary to fix the car engine problem fast and when it is ok, a test drive is recommended.