2004 nissan maxima P1273

[richie_mech]

Hello I have engine light with the code P1273 and on my scan machine it says it could be the air fuel sensor bank 1 or the fuel pump. I don't problems starting my car at all. the air fuel sensor code says Nissan stored and the fuel pump says Nissan pending. This is coming off my scan tool , I don't know what that means at all. Does anyone know how to check which part I have to change or do I have to change both.