In what year was OBD II mandated on all vehicles sold in the U.S.?

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Multiple Choice

In what year was OBD II mandated on all vehicles sold in the U.S.?

Explanation:
OBD-II is a standardized system for monitoring a vehicle’s emissions and providing diagnostic data. The nationwide rule required all new light-duty vehicles sold in the U.S. to use OBD-II starting with the 1996 model year. This shift unified diagnostic data, made it easier for technicians to read codes and for inspectors to verify emissions, and replaced the older OBD-I approach. While some regions or programs had earlier or additional requirements, the universal mandate that applies to all vehicles began with 1996 model-year cars and trucks. So, the year is 1996.

OBD-II is a standardized system for monitoring a vehicle’s emissions and providing diagnostic data. The nationwide rule required all new light-duty vehicles sold in the U.S. to use OBD-II starting with the 1996 model year. This shift unified diagnostic data, made it easier for technicians to read codes and for inspectors to verify emissions, and replaced the older OBD-I approach. While some regions or programs had earlier or additional requirements, the universal mandate that applies to all vehicles began with 1996 model-year cars and trucks. So, the year is 1996.

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