The meaning of the B1997 Code is important for solving the car engine. For solving the problem, no part or component should be substituted with position to only a code B1997 DTC. The car facility manual should be checked for more info on possible reasons of the concern, along with obligatory testing. Disconnected or dirty plugs are mutual reasons for engines that will not jump. The spark plugs classically need to be swapped each season or 25 hours of use. You should also check that the incentive plug gap is set correctly. Do not drive the car until fix the problem.