The invention relates to a valve control system for an engine including at least one cylinder (1, 2, 3, 4) with valves (5, 6), wherein said system comprises valve electromagnetic actuation members (7, 9, 10) associated with a management unit (11, 15) that controls the actuation members, said system comprising a member (11, 12, 13) for detecting a malfunction of the actuation members and a member (11, 12, 13) for electrically insulating the faulty actuation member.