P2448 Secondary Air Injection System

[sanderman James]

hi, need some help,

I have a code p2448 secondary air injection system high air flow bank 1
when I start car everything is ok when I have gone a mile engine light comes on I stop car and delete the code and the car runs fine till the next morning
and the same happens again or when car has been stood for a couple of hours and the same happens, if I drove 200 mile non stop light would not come on, i think it has something to do with air pump, anybody know where this is and what do I need to do, thank you.