The B1489 Code comes when the engine is diagnosis and for this code, it is easy to identify the meaning. If you want to solve the problem, you need to understand the meaning well. If the code is not identified, it is impossible to solve the problem. There are presently 2 major kinds of cylinder deactivation what is used according to depending on the kind of engine. The B1489 code for the pushrod plan which customs solenoids to modify the oil compression transported to the lifters. In their distorted state, the lifters are incapable to lift their mate pushrods under the valve rocker arms, subsequent in valves that cannot be activated and stay closed.