Occupant Classification Sensor Failure
The vehicle's system detects a fault in the occupant classification sensor
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)
Inside the passenger seat, there's a sensor that figures out if someone is sitting there and how heavy they are. If it senses something’s wrong, like a crack in the sensor or loose wires, it throws a fault code.
What the computer is actually seeing
The airbag control module monitors signals from the occupant classification sensor. If the signals fall outside expected ranges (like 0.5V to 5V for weight detection), it triggers the fault code.
What a healthy reading looks like
Voltage signals should range from 0.5V (unoccupied) to approximately 4.5V (occupied by a heavier adult).
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.
- 1Inspect the wiring and connectors at the occupant classification sensor for damage or disconnection.
- 2Check for any visible damage or impact to the seat or sensor area.
- 3Measure the voltage at the sensor connector; it should be between 0.5V and 4.5V while seated.
- 4If voltage is good and connections are fine, replace the occupant classification sensor.
- 5If the fault persists after replacement, you may need to check the airbag control module.
Common causes
- Disconnected or damaged connector on the occupant sensor
- Sensor malfunction due to impact or wear
- Faulty wiring harness
- Fault in the airbag control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but the airbag system may not work properly during an accident, as it might not recognize the passenger.
Will this code come back after clearing it?
If the underlying issue is fixed, it shouldn't return. If there's still a problem, it will come back.
Why does this code appear with other codes?
Multiple codes can indicate a systemic issue, such as wiring faults affecting multiple sensors.
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