B1821 Open in side squib RH circuit
What does B1821 mean on a Toyota?
B1821. Open in side squib RH circuit. The right seat or door airbag loop is open. This Toyota-enhanced code applies to Camry, Corolla, RAV4, Highlander, Scion tC, 2004 to 2013.
Common causes of B1821
- Loose right side airbag connector
- Damaged harness under right seat
- Failed right side airbag module
- Corroded squib connector
- Pinched wiring in seat track
How to fix B1821
- Disconnect battery and wait before testing
- Inspect under seat wiring and routing
- Reseat right side squib connector
- Check seat track for pinched harness
- Replace side module if loop tests open