Left Seat Occupant Classification System Performance
There's a fault in the left seat's occupant classification system.
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 car's computer is saying that it can't correctly tell if there's a person in the left front seat and if their weight is right for the airbag to activate safely.
What the computer is actually seeing
The seat sensor measures the weight on the seat. It should read around 50-250 pounds when a person is sitting in it. If it senses a weight outside of this range or a failure signal, it triggers this code.
What a healthy reading looks like
Weight sensor readings should be within 50 to 250 pounds when occupied. Resistance from the sensor should also be checked, typically expected between 1-5 kOhms when proper operation is detected.
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 seat harness and connector for damage or corrosion. Repair as necessary.
- 22. Check the seat weight sensor resistance using a multimeter; expected readings should be between 1-5 kOhms.
- 33. Verify the proper function of the airbag control module with a scan tool, including checking for additional codes.
- 44. If previous checks are clear, perform a software update or reset the airbag system and retest.
Common causes
- Faulty seat weight sensor
- Damaged wiring or connectors to the sensor
- Faulty airbag control module
- Software glitch in the occupant classification system
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It depends on the severity; while the vehicle is drivable, the airbag may not deploy correctly in a crash, which is risky.
Will this code come back after clearing?
If the underlying issue isn't fixed, yes, the code will likely return after some driving.
Why does this code pair with other seat sensor codes?
Often, multiple codes indicate systemic issues; a failure in the occupant classification system can affect or relate to multiple sensors.
Working a real vehicle right now?
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