One problem related to exhaust system emission control urea injection system (def) has been reported for the 2021 Ford F-350. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 Ford F-350 based on all problems reported for the 2021 F-350.
The contact owns a 2021 Ford F-350. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to the local dealer who diagnosed that the def pump, def pump lines needed, and def heater element needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 92,567.
| Engine And Engine Cooling problems | |
| Exhaust System Emission Control Urea Injection System (def) problems |