My 07- 6. 7- failed the Mass. state emission test with a "Catalyst Monitor not ready and 02 Sensor Monitor not ready". No work done on truck. It just completed a regen about 20 miles before the test. I'm hoping this may be the reason. However, along with the rejection sticker a "How to Qualify for an Emissions Waiver or repair Extension" info sheet printed out that states: "For Calendar year 2012, repairs cost more than $820 if your vehicle is five model years old or newer, $720 if it is six to ten years old, or $620 if it is older. " "Your vehicle can receive an inspection sticker if it has no safety defects. " Seems like a legal loophole to not replace certain expensive emission items.