B1941 says the airbag module lost its connection to the right front crash sensor. On the Ford systems that use this code the front sensors sit out ahead of the engine, which is the first place collision damage and road salt reach.
Older Ford restraint systems used discrete impact sensors mounted at the front of the vehicle, near the radiator support and behind the bumper structure, wired back to what Ford called the air bag diagnostic monitor. The monitor holds a set voltage on the sensor feed circuit and periodically pulls it low to prove the loop is intact. When the return does not follow the way it should, the monitor stores B1941 for the right front sensor and flashes the airbag lamp.
Autocodes and other reference sources list this one as right front air bag crash sensor feed and return circuit open, and Ford pairs it with matching codes for the left front sensor and for sensors that are not properly mounted to the body. That mounting detail is not trivial. These sensors read a crash through the structure they are bolted to, so a loose bracket is treated as a fault, not a maintenance item.
Circuit fault, though the thing that caused it is often a collision. The code itself is not stored crash data. It is the module reporting that it cannot see one of its front sensors right now. That distinction is what tells you the repair starts with a part and a connector rather than with the module.
No. As long as the sensor loop is open the module sets the code again immediately. Replace the sensor or repair the circuit first. We carry genuine OEM impact sensors for Ford applications, and if the same accident also locked crash data into the module, our airbag module reset clears that side of it after the sensor is in.
Inside the Ford family this covers Ford, Lincoln and Mercury vehicles from the era of separate front-mounted crash sensors. Worth flagging: some other manufacturers assign B1941 to a seat belt force limiter squib circuit instead, so a code read on a non-Ford vehicle can mean something completely different. Confirm the make before you buy a sensor.
Get the front of the vehicle up and look at the right front sensor and its connector directly. Broken mounting tabs, a green connector or a harness pulled tight against a bracket are all visible without a meter. If the vehicle has had front-end work, check whether the sensor was reinstalled at all. Ford's diagnostic for this circuit measures resistance back at the module connector, and anything above about two ohms condemns the sensor side.
Related codes: B1942 (left front impact sensor open), B0078 (right front impact sensor performance), and B1193 (crash event storage locked).
Related codes: B1942, B0078, B1193
Keep reading:
Code scope: Ford, Lincoln, Mercury. The same number can mean something different on another manufacturer, so match the code to your make before you act on it.
A reset clears stored crash data. A replacement part fixes a hardware fault. We have read these codes since the nineties and will tell you which one you are looking at.
Genuine OEM, tested, and shipped ground from Jacksonville, Arkansas.
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