Collect proper information about the engine C1725 Code and getting the real meaning is necessary to know. Do not use general meaning of the engine. The general meaning of the code is found online. There are now 2 types of cylinder dispersion method used today what depends on the sort of engine. The engine C1725 code for the pushrod style which uses solenoids to modify the oil compression delivered to the lifters. In their distorted state, the lifters are incapable to raise their companion pushrods under the valve rocker arms, resultant in valves that cannot be activated and remain closed.