What 9 owners told NHTSA about the 2016 Ford F-550

The contact called on behalf of the owner of a 2016 Ford F550. The contact stated that while one of the employees was driving 30 MPH and making a turn, a diesel fuel-burning odor was coming from the engine and entered the inside of the cabin through the A/C vents. No warning lights were illuminated. The driver was three hundred feet away from the business and continued to drive up to the business. The driver exited the vehicle and noticed oil dripping from underneath the vehicle. The driver opened the hood and noticed diesel fuel all over the engine. Upon further investigation, the driver noticed that the plastic drain valve on the bottom of the water separator was cracked, and oil was spewing upwards into the engine. The company mechanic repaired the vehicle on-site by replacing the filter. The driver was able to continue driving the vehicle. The manufacturer was not notified of the failure. The failure mileage was 85,006.

NHTSA ODI 11717386

The contact owns a 2016 Ford F-550. The contact stated while operating the vehicle, the check engine warning light illuminated and remained illuminated. The vehicle was taken to the local dealer who replaced NOX sensor, but the failure persisted. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 83,000.

NHTSA ODI 11623427