For the chassis problem of the car engine, the engine C1412 Code has appeared on the screen of the code reader. Do not use automobile meaning of the code for solving the car engine problem. The automobile is available online for free. The real meaning of the code is connected with the car brand and model of the car. Do not drive the car until the car engine is fixed. The main multi-displacement method is turned off the differing pairs of cylinders, permitting the car engine to have 3 diverse configurations and shifts. However, the method was problamatic, misread by customers, and a rash of erratic failures led to the technology being rapidly discharged.