B00A0 on 2021-2023 Ford Bronco — Occupant Classification System (Subfault)
1 vehicles · 1 makes
Most Reported On
B00A0 is an OBD-II diagnostic trouble code meaning “Occupant Classification System (Subfault).” This SRS code refers to a fault in the Occupant Classification System (OCS), which detects the size, weight, and presence of the front passenger (including an empty seat or a child seat) to decide whether and how forcefully the passenger airbag should deploy. The airbag module sets this code when the OCS sensors, weight mat, or related wiring report a fault. With this code active, the passenger airbag may be incorrectly enabled or disabled, so it should be diagnosed for safety. This code is most commonly reported on 2021-2023 Ford Bronco.
Common Causes
Diagnostic Tools
To diagnose B00A0, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
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Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
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LAUNCH CRP123X OBD-II Scanner
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Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
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FAQ
What does B00A0 mean?
B00A0 stands for "Occupant Classification System (Subfault)." This SRS code refers to a fault in the Occupant Classification System (OCS), which detects the size, weight, and presence of the front passenger (including an empty seat or a child seat) to decide whether and how forcefully the passenger airbag should deploy. The airbag module sets this code when the OCS sensors, weight mat, or related wiring report a fault. With this code active, the passenger airbag may be incorrectly enabled or disabled, so it should be diagnosed for safety.
What are the most common causes of B00A0?
The most common causes of B00A0 are: Faulty occupant classification / weight sensor mat in the seat, Damaged wiring or connector under the passenger seat, OCS module needing recalibration after seat service, Aftermarket seat covers or modifications affecting the sensor, Corroded or loose connector, Faulty OCS or airbag (SRS) control module, Poor ground connection. The specific cause varies by vehicle.
How much does it cost to fix B00A0?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B00A0?
Au7o has documented B00A0 across 1 vehicle models from 1 manufacturers: Ford.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.