2007 Dodge Caliber 1.8L, 5 speed, engine light on, had Auto Zone run an analyzer which threw code P0455 - ESIM said I needed a Fuels Vapor Leak Detection Pump. I bought one and put it in, checked the hose and electrical connection. Everything looks good, however the engine light is still on. What else can I do?

 

You need to reset the light.

 

Stop letting Autozone diagnose your car. A cheap scan tool and code is not an "analyzer" They want to sell you parts. They can tell you anything they want and you have no recourse. You're just stuck with a part.