Ford Bronco 2025 — technical service bulletin
Bulletin 25P20 · NHTSA communication 11021211 · issued Jul 26, 2025
Technical service bulletin
communication type
Engine
component
2025
model years
4
vehicle entries
Official summary
Certain 2025 Model Year Bronco, Explorer, Mustang, and Ranger Vehicles Engine Coolant Temperature Sensor Replacement On all affected vehicles, the Engine Coolant Temperature sensor (ECT) may have a poor solder joint internally, causing a Diagnostic Trouble Code (DTC) to set against the sensor for an open circuit and the check engine light to illuminate
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.