30C500 on BMW:si muistiin tallennettu vika (ISTA-vikakoodi, ei vakiomuotoinen OBD-II P-koodi).
Mitä se tarkoittaa: Active grille shutters / radiator blind stuck or restricted (intermittent, plausibility: blocking). The shutters don't open/close properly, affecting engine-temperature regulation and aerodynamics. Causes: debris/leaves/ice in the mechanism, failed shutter actuator motor, bent louvres after a front-end knock, wiring/connector issues.
