The B1597 Code is related with the faulty engine and do not think to drive the car with this problem. You need to solve the problem by the help of professional. There are now 2 key types of cylinder diffusion used today, based on the type of engine. The B1597 code for the pushrod design which uses solenoids to alter the oil pressure distributed to the lifters. In their misshapen state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, subsequent in valves that cannot be activated and remain closed. You need to solve the problem sooner.