Passenger Airbag Deactivation Switch Fault
There's a problem with the passenger airbag deactivation switch or its circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The passenger airbag is supposed to turn off when there's no one in the seat, but this code means the system isn't working right.
What the computer is actually seeing
The airbag module monitors the status of the passenger seat weight sensor and the deactivation switch. If the switch fails to open or close correctly, it triggers this fault code.
What a healthy reading looks like
A properly working switch should read a resistance of 0.5 to 1.5 ohms when activated and open when deactivated.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors leading to the passenger airbag deactivation switch for damage or corrosion. If found, repair or replace as necessary.
- 22. Check the resistance of the passenger airbag deactivation switch. It should measure 0.5 to 1.5 ohms when active. If out of range, replace the switch.
- 33. Verify the operation of the seat weight sensor. If there are no issues with the switch and wiring, the sensor should be tested according to manufacturer specifications.
Common causes
- Faulty passenger airbag deactivation switch
- Damaged wiring or connectors
- Faulty seat weight sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's moderate severity; the airbag may not deploy in an accident, so it’s best to repair it soon.
Will this code come back after clearing it?
If the underlying issue isn’t resolved, the code will likely reappear.
Why does this code show up with B2440?
B2440 relates to the airbag system and often occurs with deactivation switch faults due to shared components.
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