Deadman,
IME, not with the TCH, the MIL light will reset after several start cycles. A cycle means the car is started from coldand gets fully warmed up and drives several miles ... at least on my VW.
And, he asks!!

Why does NJ still have this ****-a-Mamie gas jockey law?? Similar to Oregon's cocked up rule. I'm surprised the citizens of the Garden State haven't gotten that tossed nonsense in the bin.
Maybe a call to the gas station to tell them that the MIL light is on because they didn't tighten the cap?? You're not a 'car person' and you paid the dealer $XXX to fix the problem and to whom should you send the bill???
Cheers!