rpms goin up and down while parked

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. Diagnostic trouble codes, like the ones you've likely retrieved, do not point to failed components- ever. Any information you get is data that helps diagnose a concern. The MAF (mass air flow) sensor was probably just fine. But other information that intersects with that sensor are likely in question, which means that it's essential to have more understanding as to what's going on with the vehicle, when the problem started and as many details you can share as possible. The symptom you are sharing is likely related to an air intake leak - air getting in that isn't controlled. Testing is required hands on. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.