Passenger Side Occupant Classification System Malfunction
The system detects a problem with the passenger seat occupancy 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)
The computer checks if there's someone in the passenger seat and something is wrong with that sensor, or the wiring connected to it is bad.
What the computer is actually seeing
The OCS (Occupant Classification System) looks for a specific resistance value from the sensor; anything outside the range of 250 to 1000 ohms indicates a problem.
What a healthy reading looks like
Expected resistance from the sensor should be between 250 and 1000 ohms; if not, set the code.
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.
- 1Check the passenger seat for any visible damage or obstruction on sensors.
- 2Inspect wiring and connectors for wear, corrosion, or disconnection — repair as necessary.
- 3Use a multimeter to measure the resistance across the passenger seat sensor — should be between 250-1000 ohms.
- 4If resistance is outside this range, replace the seat occupancy sensor; if it's within range, check the Body Control Module (BCM) for faults.
Common causes
- Faulty passenger seat occupancy sensor
- Damaged wiring or connectors to the sensor
- Faulty Body Control Module (BCM)
- Low battery voltage affecting system operation
Typical repair cost
$$$ (300-700)
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but the airbag system may not properly function in a collision.
Will this code come back?
If the issue isn't fixed, the code will likely return after a test drive.
Why does this code sometimes appear with B0071?
B0071 indicates a similar issue with the driver seat sensor, so they may appear together if there's a common fault.
Working a real vehicle right now?
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