You may get the general meaning of the engine C1814 Code online but it is not necessary to use. Without using correct meaning of the code, it is not possible to solve the car engine problem. The major multiple shift system turned off differing pairs of cylinders, permitting the engine to have 3 dissimilar configurations and shifts. The engine C1814 code had an elaborate testing process, including showing engine problem codes on the air conditioning display. However, the system was troublesome, misunderstood by customers, and a rash of random failures led to the technology being fast retired. A test drive is recommended after solving the car engine problem.