BMW fault code 300B0

300B0 is a fault stored in your BMW's memory (an ISTA fault code, not a standard OBD-II P-code).

What it means:
BDC (Body Domain Controller) — front passenger power-window switch: faulty/implausible signal from the passenger-side window switch (stuck or worn button, less often wiring). Usually affects only control of that window.

Related codes: 302600 · 30487 · 305497 · 30B9 · 30BA · 30BB · 30C1 · 30C500

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