Airbag light on with B2290 code

Tiny
AMITH KUMAR
  • MEMBER
  • 2007 FORD FUSION
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
It has airbag warning light turns on and 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 re-calibrating the OCM sensor should fix the issue, they tried to re-calibrate it two times was successfully completed but the code did not go away. So they are suspecting that OCM sensor could be bad itself, and need to be replaced. Of course they did not allow me to watch the process they are doing, so I do not 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 four sensors underneath the seat including rail sensors, and all and all. I cannot even locate those four sensors they talked about at Fordparts. Com with my car details. I also could not locate those many plugs and sensors underneath the passenger seat in my car. So I am not sure how much to trust that information.

It is an expensive part $180.00, I do not want to just replace it, if it is really not required, and thus may not fix the problem. Looking for second 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.
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Wednesday, October 18th, 2017 AT 11:52 AM

12 Replies

Tiny
KEN
  • ADMIN
Testing the sensor is difficult because of the resistance to weight ratio. Here is the wiring diagrams and the location of the occupant control module (below) as well. You might be better off getting a used seat check to see which one is cheaper.

The wiring diagrams give you an idea of how the system is put together.

Please let us know what happens.

Cheers, Ken
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Thursday, October 19th, 2017 AT 12:12 PM
Tiny
KFRIDAY
  • MEMBER
2006 Ford Fusion DTC B2290 Occupant Classification System (OCS) fault

My airbag light came on a few months ago. I checked all the connections under the seat and that did nothing. I got a BlueDriver scan tool and it showed me the B2290 code. This points to a sensor under the passenger seat which includes the rail system that the seat slides on. I did a ton of research and didn t see a good solution. I went to two trusted mechanics and all they could give me was information I already had and suggested I go to a dealership. I went to a Ford dealership and gave them $100 to tell me what I already knew, and also got an estimate of $1,500 to fix the issue. They wanted to charge $1,000 for the OCS replacement kit and seat rails, because apparently everything should be replaced as a single unit according the manufacturer.

I said to myself, That s ridiculous. I also did a lot of cursing. I ended up finding a good salvage yard called Pull-A-Part. I was lucky enough to find a 2007 Fusion with the seat in good condition. I went to www. Vehiclehistory. Com and saw that this car was not in an accident. That s important because the OCS system might not be good if it was. It took me less than an hour to remove the seat and disconnect the seat pan from the back of the seat. The pan comes off as one piece with the rails and all the OCS wiring underneath. They charged me $8 for the part! Can t beat that!

So I did the proper depower of the system by removing the fuses for the OCS and RCM. Then I disconnected the negative battery terminal and waited a few minutes. I took out the bad seat pan and track assembly and replaced it with the salvaged pan and tracks. The swap took about an hour. I reinstalled the seat, put the fuses back, did a proper repower of the system (sounds weird, but before you connect the negative battery cable you turn your ignition to the On position; not sure why), turned my ignition off, waited ten seconds, and finally turned it back on. Airbag light is off! DTC B2290 moved from active status to stored which means it s no longer an issue. I feel so victorious. It s always awesome to fix something yourself and also save this much money. I only wish I never gave my money to the dealer, but from everything I read they were the only people who could fix this issue. I m here to tell you that you can do it yourself. I will point out that my new seat may need to be recalibrated using a Ford scan tool, but my light is off and that s all I care about. I hope this helps someone with the same problem.
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Saturday, December 9th, 2017 AT 11:58 AM
Tiny
KEN
  • ADMIN
You are victorious! This is car repair at its best. Nice work :)

Great addition to this thread! Please feel free to help out whenever you are on the site

Cheers, Ken
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Saturday, December 9th, 2017 AT 3:01 PM
Tiny
MAILIBU1955
  • MEMBER
  • 2013 FORD FUSION
  • 4 CYL
  • TURBO
  • FWD
  • AUTOMATIC
  • 15,000 MILES
Airbag light stays on. Dealer did perform recall campaign. Since than the light is always on. Please help. Thanks, Bob
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Saturday, December 9th, 2017 AT 3:01 PM (Merged)
Tiny
HMAC300
  • EXPERT
If still under warranty it may not have been erased with a scanner which it requires or something else is wrong with it. If not it will need to be scanned for codes anyhow to see what is wrong
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Saturday, December 9th, 2017 AT 3:01 PM (Merged)
Tiny
MAILIBU1955
  • MEMBER
Thank you for your assistance. Note, The dealer wants $100.00 to scan for the problem.
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Saturday, December 9th, 2017 AT 3:01 PM (Merged)
Tiny
MAILIBU1955
  • MEMBER
Thanks so much for your interest.
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Saturday, December 9th, 2017 AT 3:01 PM (Merged)
Tiny
HMAC300
  • EXPERT
Any garage with a scanner can read that auto parts can't
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Saturday, December 9th, 2017 AT 3:01 PM (Merged)
Tiny
AMITH KUMAR
  • MEMBER
Hi KFriday,
Thanks for chiming in, and a wonderful step by step guid. And yes my problem got solved in the same way, yours did. Only difference is, I found a wonderful mechanic, who did all this for me for a very legit price. And he had all high end diagonsis tools to do calibration as well. Hopefully, this post will help others in need, facing similar issue.
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Wednesday, January 10th, 2018 AT 9:55 AM
Tiny
KEN
  • ADMIN
Thanks for getting back to us and yes a good mechanic is a life saver. This post will help others and that is what we are all about.

Use 2CarPros anytime, we are here to help. Please tell a friend.

Cheers, Ken
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Wednesday, January 10th, 2018 AT 11:46 AM
Tiny
AMITH KUMAR
  • MEMBER
Yes Ken & team, I highly appreciate all the guidance & effort by 2carpros team. It really helps all DIYers like me.
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Thursday, January 11th, 2018 AT 10:29 AM
Tiny
KEN
  • ADMIN
Good to hear, please use 2CarPros anytime :)
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Thursday, January 11th, 2018 AT 12:26 PM

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