The engineer of the automobile need to get the meaning of the B2457 Code and it is easy to get from the manufacturer. Like the all car engines, the engine system works especially established hydraulic lifters for the engine B2457 code intake and finish valves. The lifters can be collapsed by disengaging an internal locking pin. The locking pin is disengaged using solenoids to alter oil pressure fed into the lifter. It is easy to fix the car engine according to the manufacturer information but if you follow the dictionary meaning of the code, you cannot solve the car engine anyway.