2007 Ford Fusion SEL V6 3.0L Airbag Light On With B2290 Code

It has airbag warning light turns on & passenger air bag light goes off, after
few seconds of ignition/engine on. I hooked up the scanner and it gives
B2290 code stating Occupant Classification System fault, I tried erasing the
code, but unable to do it, as it comes right back on. I unplugged the wiring to
OCM (or occupant detection / weight) sensor part#14B422 underneath the
passenger seat, and then ofcourse U1900 came which says SRS module
fault, but then I was able to erase the B2290 code, and not U1900.  I also
took it to a body shop as they have high end diagnostic tools, and they said
recalibrating the OCM sensor should fix the issue, they tried to recalibrate it
two times was successfully completed but the code didn't go away. So they
are suspecting that OCM sensor could be bad itself, and need to be
replaced.
Its an expensive part $180, I don't want to just replace it, if its really not
required. Looking for 2nd opinion or suggestion to how to really identify the
problem part.



It has airbag warning light turns on & passenger air bag light goes off, after
few seconds of ignition/engine on. I hooked up the scanner and it gives
B2290 code stating Occupant Classification System fault, I tried erasing the
code, but unable to do it, as it comes right back on. I unplugged the wiring to
OCM (or occupant detection / weight) sensor part#14B422 underneath the
passenger seat, and then ofcourse U1900 came which says SRS module
fault, but then I was able to erase the B2290 code, and not U1900.  I also
took it to a body shop as they have high end diagnostic tools, and they said
recalibrating the OCM sensor should fix the issue, they tried to recalibrate it
two times was successfully completed but the code didn't go away. So they
are suspecting that OCM sensor could be bad itself, and need to be
replaced. Ofcourse they didn't allow me to watch the process they are doing,
so I don't have full details on what all they did.

I inquired with dealership over phone about it, and as per them following
spec, it needs to replace all 4 sensors underneath the seat including rail
sensors, and all & all. I can't even locate those 4 sensors they talked about
at fordparts.com with my car details. I also couldn't locate those many plugs
& sensors underneath the passenger seat in my car. So I am not sure how
much to trust that information.

Its an expensive part $180, I don't want to just replace it, if its really not
required, and thus may not fix the problem. Looking for 2nd opinion or
suggestion to how to really identify the problem part. And if there is a way to
test if the sensor is really bad, by jumping/shorting the wires, resistance test
etc etc.