B0081

Front Passenger Belt Switch Circuit

Moderate severity

The SRS or body control module has detected a fault in the front passenger seat belt buckle switch circuit. The switch reports whether the belt is fastened and is used for the belt warning lamp and for restraint logic.

Common causes

Buckle switch failed or stuck
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $90-440
Wiring under seat damaged
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $90-440
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First things to check

1Confirm the code with a scan tool and check for additional related codes.
2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does B0081 mean?

B0081 means "Front Passenger Belt Switch Circuit". It is a generic OBD-II code that points to a fault in the body.

What are the most common causes of B0081?

buckle switch failed or stuck; wiring under seat damaged — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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