B2290
Occupant Classification System Fault
B2290 is an OBD-II diagnostic trouble code meaning: Occupant Classification System Fault. Common causes: open or short circuit in the weight sensor circuit, damage to wiring harness under seat.
Symptoms
- Airbag light is on
- Passenger airbag does not activate
- False airbag deployments
Causes
- Open or short circuit in the weight sensor circuit
- Damage to wiring harness under seat
- OCS module malfunction
- Problems with system calibration
- Corrosion or oxidation of contacts
How to Fix
- Check the integrity of the wiring harness under the seat
- Diagnose weight sensors using a scanner
- Check contacts and connections of the OCS module
- Recalibrate the passenger classification system
- If necessary, replace the OCS module or sensors
FAQ
What does the B2290 code mean?
B2290 is an OBD-II diagnostic trouble code that indicates: Occupant Classification System Fault
What causes a B2290 error code?
The most common causes of B2290 include: Open or short circuit in the weight sensor circuit; Damage to wiring harness under seat; OCS module malfunction; Problems with system calibration.
How do I fix a B2290 diagnostic trouble code?
To fix B2290: Check the integrity of the wiring harness under the seat. Diagnose weight sensors using a scanner. Check contacts and connections of the OCS module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2290?
Do not drive — repair immediately
See also: Russian version · NationStat