The engine U1193 Code is related with the car engine problem and it needs to know the real cause of the car engine problem. The engine needs solution before starting to run. The main multi-displacement method turned off the opposite pairs of cylinders, letting the engine to have 3 diverse outlines and displacements. The engine U1193 code had an extravagant diagnostics practice, with showing engine trouble codes on the air conditioning display. However, the system was upsetting, misunderstood by customers, and a rash of random failures led to the technology existence rapidly retired. Do not need to change any part of the car engine for solving the car engine problem.