Based on that article, the only way push to pass could have been activated early was if the team found some way of spoofing the signal, in other words, it must have been deliberate cheating, not an oversight. It’s up there with the Ferrari fuel flow scandal and the Toyota WRC turbo restrictor, where a bunch of engineers must have sat down and planned how to cheat. That’s extremely disappointing coming from Penske, they really should have been suspended for the season for that.
(If you don’t know the Toyota turbo restrictor scandal, all engines were required to run a standard size inlet restrictor to limit power. Toyota made one that looked from the outside to be a solid chunk of metal, but had a mechanism inside that could be opened up with a special tool to give a larger inlet. It was held open by pressure from the hose clamp that held the pipework on. When the clamp was loosened to remove the restrictor, the mechanism would spring closed and it would look legitimate. Utterly deliberate cheating that multiple senior engineers must have known about. As I recall, Toyota were suspended from competition over it.)
Edit: And now Scott Dixon’s leading the championship. That dude is just unbelievable, he’s won at least one race each year since 2005.