It is important to get the meaning of B1389 Code for resolving the problem. The code arises for the fault of engine and it is essential to fix the problem to run car. The inventive multi-displacement system shut off conflicting pairs of cylinders, letting the engine to have 3 various setting and dislocations. The B1389 code had an extravagant diagnostics process, plus viewing engine trouble codes on the air conditioning display. Still, the system was worrying, misjudged by customers, and a hasty of random failures led to the technology being rapidly retired. You should check the car by test drive after fixing the problem.