The B2571 Code is engine code and it seems a kind of body problem what is easy to solve. The general meaning of the code is not useful. There are presently 2 main types of cylinder diffusion used today, depending on the type of engine. The B2571 code for the pushrod design which uses solenoids to change the oil burden brought to the lifters. In their collapsed state, the lifters are powerless to raise their friend pushrods under the valve rocker arms, resultant in valves that cannot be activated and remain closed. After solving the car engine, you need to drive the car as test.