How to turn on the check engine light on a 2005 Pontiac grand am

I went to emissions my Pontiac grand am se yesterday and it failed because the check engine light command status: off The on board diagnostic readiness monitors say : catalyst : not ready evaporative: not ready , air injection: n/a , o2 sensor: ready, o2 heater: not ready , egr system : not ready .they told me the light needs to be on so there machine needs to communicate with my cars sensor and the check engine light needs to be on also the equipment inspection report says , gas cap presence: pass gas cap integrity : pass. smoke : pass Emissions : n/a On board diagnostics : fail Equipment inspection : pass Over all result : fail

Thanks I'll try that

hi Janine I have the same issue with my Toyota Prius pleas let me know what you did to fix it thanks