B1642 No communication with the right side airbag sensor bus
What does B1642 mean on a Toyota?
B1642. No communication with the right side airbag sensor bus. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.
Common causes of B1642
- Failed right side airbag sensor
- Failed right rear airbag sensor
- Failed center airbag sensor assembly
- Side airbag sensor harness open or shorted
- Poor electrical connection
How to fix B1642
- Disconnect the battery and wait before touching SRS circuits
- Confirm the code and inspect the right 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