The contact’s husband owns a 2018 Ford F-150. The contact stated that upon starting the vehicle, there was an abnormal knocking sound coming from the engine. The check engine warning light was illuminated. The dealer was notified of the failure and diagnosed the vehicle with a defective cam phaser. Upon investigation, the contact related the failure to Customer Satisfaction Program: 21N03. The manufacturer was notified of the failure and confirmed that the vehicle was not covered under the Customer Satisfaction Program. The vehicle was not repaired. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was unknown.