Airbag / Restraint System Circuit Fault (manufacturer-specific)
The B1404 code means the vehicle's onboard diagnostic system has detected: Airbag / Restraint System Circuit Fault (manufacturer-specific). This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- Varies — depends on the specific component this manufacturer-specific code points to on your vehicle. Diagnose before buying parts.
Manufacturer-specific code. B1404 is a manufacturer-specific DTC, so its exact definition can differ by make, model, and year. Use the meaning above as a general guide, and always confirm it against your vehicle manufacturer's official service information (or a make-specific scan tool) before diagnosing or replacing parts.
What Are the Symptoms of B1404?
- Check Engine or a related warning light on
- Exact symptoms depend on the specific system this code covers for your make
- A make-specific scan reveals which subsystem and circuit is involved
What Causes B1404? (Most Likely First)
- A fault in the specific component or circuit this code monitors (the exact part varies by manufacturer) High
- Damaged wiring, a corroded connector, or a poor ground in that circuit Moderate
- A related sensor or control module reporting or causing the fault Moderate
Can I Still Drive with B1404?
Short distances only. B1404 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
Does B1404 mean the same thing on every vehicle?
No. B1404 is a manufacturer-specific diagnostic trouble code, so its exact meaning varies by make, model, and year. Always confirm it against your vehicle manufacturer's service information before diagnosing or replacing parts.
What does B1404 most likely indicate?
Airbag / Restraint System Circuit Fault (manufacturer-specific). Treat this as a general guide and verify the specifics for your vehicle.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose B1404?
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Confirm your exact make, model, and year first — B1404 is manufacturer-specific and can mean different things across brands.
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Read B1404 with an enhanced/make-specific scan tool and check your manufacturer's official service information for the precise definition and procedure.
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Inspect the wiring, connectors, and grounds for the indicated circuit before replacing any part.
Which Vehicles Commonly Get B1404?
- 2008-2018 Toyota Camry
- 2010-2020 Honda Civic
- 2007-2017 Ford F-150
- 2009-2019 Chevrolet Silverado
- 2011-2020 Nissan Altima
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