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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

How to fix code B2909

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Old Jan 27, 2023 | 02:39 AM
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Default How to fix code B2909

Hi guys, I purchased a slightly damaged 2005 f150 XLT 4.6L V8 2WD. It was in a minor front bumper accident., And the airbag light is on. The front impact sensor by the radiator was damaged from.age and the elements.
when I used my scan tool, it showed a fault for the impact sensor and other things.
I was able to get rid of the fault for the impact sensor to the front of the vehicle, but I can't get the following code cleared...B2909 ( it says belt tension sensor fault) does anyone know what are the possible causes of this code still being present? What are some things I could try to clear this code?
thank you in advance for your response
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Old Jan 27, 2023 | 06:51 AM
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At the connector
Disconnect/Reconnect multiple times to clear oxidation and see if this helps.
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Old Jan 27, 2023 | 08:36 AM
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Originally Posted by Jimboy
At the connector
Disconnect/Reconnect multiple times to clear oxidation and see if this helps.
Thiank you very much for your help. Which connector? Ones going directly to the module under the middle seat? The connectors under the passenger and driver's seats? Or some other connector?
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Old Jan 27, 2023 | 08:44 AM
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I would assume the connector at the seat belt.
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Old Jan 27, 2023 | 08:49 AM
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Make sure engine is off and key removed. Air bags can kill you.
In general there are connectors for the supplemental restraint system located under the seats and sometimes in the pillars between front and back seats. I would refresh contacts on any and all.
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Old Jan 27, 2023 | 09:30 AM
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Originally Posted by Jimboy
Make sure engine is off and key removed. Air bags can kill you.
In general there are connectors for the supplemental restraint system located under the seats and sometimes in the pillars between front and back seats. I would refresh contacts on any and all.
Ok I'll start here and see if I have success
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Old Jan 27, 2023 | 09:51 AM
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Slow down a bit...

Do NOT futz around with anything related to the airbag system without FULLY following the safety procedures in the service manual. Failure to do so can be "sub-optimal", to say the least. For one, do not touch anything without first disconnecting the battery's negative terminal and allowing the backup internal power supply to deplete (a minute or so).

B2909 indicates there is an issue detected with the seat belt tension/position sensor on the passenger side. The related connector is near the base of the seat belt mounting faster behind the lower B-pillar trim.

Last edited by ProjectSHO89; Jan 27, 2023 at 09:53 AM.
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Old Jan 27, 2023 | 10:01 AM
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Originally Posted by ProjectSHO89
Slow down a bit...

Do NOT futz around with anything related to the airbag system without FULLY following the safety procedures in the service manual. Failure to do so can be "sub-optimal", to say the least. For one, do not touch anything without first disconnecting the battery's negative terminal and allowing the backup internal power supply to deplete (a minute or so).

B2909 indicates there is an issue detected with the seat belt tension/position sensor on the passenger side. The related connector is near the base of the seat belt mounting faster behind the lower B-pillar trim.
This is sound advice. Thank you very, very much. I will definitely follow your instructions and guidelines!!
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