The engine of the car should be fixed properly and check the car engine by the engine code reader to know the problem of the engine problem. The engine code is meaningful and if you get the real meaning of the code, you can know the cause and location of the engine problem. The error P0852 Code helps you to solve the car engine problem. The engine P0852 code for the pushrod design which uses solenoids to change the oil compression distributed to the lifters. The lifters are unable to raise their mate pushrods under the valve rocker arms, subsequent in valves that cannot be motivated and endure closed.