2004 come up with code iso9141-2

Question

Comes up number one cylinder misfire have done put plugs wires new injector new distributor cap and rotor and new distributor and crankshaft position sensor

Answer 1

there is no code iso9141-2, try to use a different OBD-II reader the one you are using is not compatible with your car.

have you checked for intake leaks?I would check compression also