On my last and now during my current multi-day road trip, the check engine light has been coming on for a few seconds then going out. My Duc is performing OK when this happens. It leads me to a couple questions:
- Does the check engine light have to be on to check see an error?
- Is the proper way to check the codes is to push the left toggle switch up while you're stopped and the error codes should be shown?
- If the light doesn't stay lit, is my Duc probably OK? What might be causing the light to come on?