BMW fault code 354300

354300 is a fault stored in your BMW's memory (an ISTA fault code, not a standard OBD-II P-code).

What it means:
NOx sensor at the DeNOx catalyst: implausible signal — the NOx signal offset is too low. Usually drift/ageing of the NOx sensor (diesel/SCR); requires diagnosis or sensor replacement.

Related codes: 354C00 · 357692

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