B10AA on 2021-2025 Ford Mustang Mach-E — Driver Seatbelt Pretensioner Circuit Fault
1 vehicles · 1 makes
Most Reported On
B10AA is an OBD-II diagnostic trouble code meaning “Driver Seatbelt Pretensioner Circuit Fault.” B10AA is a manufacturer-specific body/restraint code generally indicating a fault in a seatbelt pretensioner (squib/firing loop) circuit, often described as the driver lap pretensioner circuit being shorted or cross-linked to another firing loop. The airbag/restraint control module monitors these circuits and detected an electrical condition that could prevent correct pretensioner operation in a crash. Because this is a safety-restraint code the airbag light is usually illuminated. Exact wording varies by maker, so confirm with vehicle-specific service data. This code is most commonly reported on 2021-2025 Ford Mustang Mach-E.
Common Causes
Diagnostic Tools
To diagnose B10AA, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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BlueDriver Pro Bluetooth Scanner
by BlueDriver
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
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
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Autel MaxiCOM MK808S Diagnostic Tool
by Autel
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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- Oil reset, EPB, BMS, TPMS, injector coding
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FAQ
What does B10AA mean?
B10AA stands for "Driver Seatbelt Pretensioner Circuit Fault." B10AA is a manufacturer-specific body/restraint code generally indicating a fault in a seatbelt pretensioner (squib/firing loop) circuit, often described as the driver lap pretensioner circuit being shorted or cross-linked to another firing loop. The airbag/restraint control module monitors these circuits and detected an electrical condition that could prevent correct pretensioner operation in a crash. Because this is a safety-restraint code the airbag light is usually illuminated. Exact wording varies by maker, so confirm with vehicle-specific service data.
What are the most common causes of B10AA?
The most common causes of B10AA are: Faulty seatbelt pretensioner (squib) assembly, Damaged or chafed wiring in the pretensioner circuit, Shorted or cross-connected firing-loop wiring, Corroded or loose connector at the seatbelt buckle/retractor, Faulty airbag/restraint control module, Improper repair or clockspring/connector issue. The specific cause varies by vehicle.
How much does it cost to fix B10AA?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B10AA?
Au7o has documented B10AA 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.