The B1465 Code has several meanings and it is not easy to get the correct meaning if you do not have all necessary information or tools. Some expensive devices are necessary to use for checking the engine and if you do not have all those things, you should not try to solve the problem. The problem of the engine seems a type of body problem. There are presently 2 key types of cylinder diffusion used today, dependent on the type of engine. The lifters are powerless to raise their acquaintance pushrods under the valve rocker arms, resulting in valves that cannot be activated and persist closed.