What causes B1123 on a Toyota?

Failed occupant classification system Failed airbag sensor assembly center Damaged right front seat wiring Loose or corroded seat connector Weight sensor fault in the front passenger seat

How do I fix B1123 on a Toyota?

Disconnect the battery and wait before touching SRS wiring Confirm the code with an SRS-capable scanner and read freeze frame Inspect and reseat the front passenger seat connectors Test the occupant classification wiring for opens and shorts Replace the failed seat sensor or module only after tests fail

B1123 Occupant classification system malfunction. The airbag sensor center cannot confirm the front passenger seat status

Q: What does B1123 mean on a Toyota?

B1123. Occupant classification system malfunction. The airbag sensor center cannot confirm the front passenger seat status. Applies to Toyota, Lexus and Scion models that use this code.

Category: Body
Severity: Airbag Light
Applies to: Toyota, Lexus and Scion models that use this code

What does B1123 mean on a Toyota?

B1123. Occupant classification system malfunction. The airbag sensor center cannot confirm the front passenger seat status. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1123

Failed occupant classification system
Failed airbag sensor assembly center
Damaged right front seat wiring
Loose or corroded seat connector
Weight sensor fault in the front passenger seat

How to fix B1123

Disconnect the battery and wait before touching SRS wiring
Confirm the code with an SRS-capable scanner and read freeze frame
Inspect and reseat the front passenger seat connectors
Test the occupant classification wiring for opens and shorts
Replace the failed seat sensor or module only after tests fail