check engine light on runs rough codes cc-id-031 what is it on 2007 Mini Cooper S

It happend Friday and it has not changed

Asked by for the 2007 Mini Cooper S
The cc-id-031 indicator is mini saying "increased emissions"

A drop in tank pressure will store this fault, for emissions purposes there is a tank pump/sensor and when a drop in pressure is measured, this device pressurizes the system and stores the fault.

Check your cap