Ford F-250 Super Duty DEF system light issue indicating sensor malfunction, recurring problem on Ford F-250 Super Duty

Some Ford F-250 Super Duty owners report experiencing issues with the DEF system light, which often indicates a sensor malfunction. This problem can stem from a faulty DEF system or related components, with common diagnostic trouble codes such as P207F, P20EE, and P2200 frequently reported. Additionally, a dry DEF tank may trigger a fault warning, signaling the need for a refill. Sensor malfunctions on the DEF pump can further complicate the system's operation, and it is critical to check for any related Diagnostic Trouble Codes (DTCs) before proceeding with repairs. Recurring issues may necessitate calibration updates or component replacements, and in some instances, biodiesel deposits can hinder the DEF system's performance. Repair costs for these issues can be substantial, potentially reaching around $2100 for fixing a DEF pump fault. Given the DEF system's importance in reducing harmful emissions through Selective Catalytic Reduction (SCR), owners experiencing these problems are advised to consult a mechanic or Ford dealership for a thorough diagnosis and appropriate repairs.