B1020
Occupant Sensor Control Unit
Severity
⚠️ MediumCan you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)
Symptoms
- Airbag light is on
- The passive restraint system does not activate for the passenger
- Diagnostic system memory error
Causes
- Open or shorted sensor wiring harness
- Passenger position sensor malfunction
- Problems with the airbag control module
- Corrosion of contacts or connectors
How to Fix
- Check the integrity of the sensor wiring harness
- Inspect connectors and contacts for corrosion
- Test passenger position sensor
- Check the airbag control module
- Reset the error and check for its reappearance