The contact owns a 2019 Jayco J-flight. The contact received notification of NHTSA Campaign Number: 21V184000 (Equipment) however, the part for the recall repair was unavailable. The contact contacted the dealer who confirmed that the parts were ordered however the repair was pushed back several times due to parts not being available. The contact stated the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had stated the vehicle's carbon dioxide and smoke detector sensor had set off indicating that one or both were occurring. There was no actual fire or smoke however there was a fuel like odor that remained in the vehicle. The approximate failure mileage was 200.