9C98 on BMW:si muistiin tallennettu vika (ISTA-vikakoodi, ei vakiomuotoinen OBD-II P-koodi).
Mitä se tarkoittaa: Panoramic sunroof — Hall (position) sensor fault. The Hall sensors tell the roof control unit the glass position, speed and direction (also for anti-trap protection). A fault can make the roof misbehave or refuse to close/open correctly. Often fixed by re-initialising (normalising) the sunroof; if it returns, the sensor/motor or roof control unit needs checking. Not a safety-critical engine fault.
