804081 er en feil som er lagret i BMW-ens minne (en ISTA-feilkode, ikke en standard OBD-II P-kode).
Hva det betyr: Drive readiness: implausible bus signal — «production/diagnostic mode, faulty». Most often appears with a weak/discharged battery, after long parking or after diagnostics; frequently self-clears. What to check: battery charge and terminals (>12.4 V with engine off); if it returns after charging — network/module diagnosis needed.
