On: I fixed a parasitic drain on my car in 408 days

[jxramos]

I recently noted in my OBD2 scanner that some vehicles support the measure of miles since check engine lights were cleared or something to that extent. It made me ponder at some point in the future there is going to be regulation mandating that to pass an emissions test you must pull up to the test station with a minimal threshold mileage on the car to vet no check engine lights have tripped in that interval.

[linuxftw → jxramos]

That's already a thing. Many sensors will be in 'learn mode' and you can't pass emissions until they are fully active.