B1648 Left side airbag sensor bus fails its initialization
What does B1648 mean on a Toyota?
B1648. Left side airbag sensor bus fails its initialization. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.
Common causes of B1648
- Failed left side airbag sensor
- Failed left rear airbag sensor
- Left side airbag sensor harness open or shorted
- Failed center airbag sensor assembly
- Poor electrical connection
How to fix B1648
- Disconnect the battery and wait before touching SRS circuits
- Confirm the code and inspect the left side sensor area
- Inspect and reseat the side and rear airbag sensor connectors
- Test the sensor circuit for opens and shorts
- Replace the failed sensor only after tests fail