Due to the body of the engine, the error B1863 Code appears. Body part of the engine can be solved and it is not very difficult thing to solve. The engine B1863 OBD2 reports a sensor fault, change of the sensor is doubtful to solve the original problem. The error is maximum likely to be produced by the systems that the sensor is monitoring, but might even be instigated by the connecting to the sensor itself. Indicator and headlight bulbs need regular care for them to keep functioning properly. You have to solve the problem from the car by the expert or automobile repair enginer.