The ABS light being on indicates a problem with the vehicle's anti-lock braking system, which is crucial for ensuring the vehicle's safety and performance, particularly during emergency braking situations. To pass the inspection, the ABS issue must be diagnosed and repaired before the vehicle can be deemed roadworthy and eligible for registration.
It is important to note that inspection laws and regulations can change over time, and it's always best to check with the Massachusetts Registry of Motor Vehicles (RMV) or a reputable inspection facility for the most current information regarding vehicle inspections and specific requirements.