NB9 Factory-verified

Cadillac · Regular Production Option

Emissions override, state-specific

Years 2014–19, 2025–27 Models 16 Factory citations 42
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Also described as Emission override, state-specificEmissions override, state-specific, between YF5 and NE1 states

Also documented for BuickChevroletGMC

Documented applications

This page aggregates every documented appearance of NB9 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.