What is a Ford air bag code flashing 84?

A flashing code 84 in a Ford airbag system typically indicates a problem with the passenger-side occupancy sensor. This sensor determines if a passenger is seated and adjusts airbag deployment accordingly. The code suggests a malfunction in the sensor itself, its wiring, or a related control module issue. You'll need a professional scan tool to properly diagnose the exact nature of the fault within the system. Do not attempt to repair this yourself; airbag systems are complex and dangerous. Driving with an airbag system fault is risky, so get it checked and repaired by a qualified mechanic as soon as possible.