What causes B1638 on a Toyota?

Failed left rear airbag sensor Failed left side airbag sensor Left side airbag sensor harness open or shorted Failed center airbag sensor assembly Poor electrical connection

How do I fix B1638 on a Toyota?

Disconnect the battery and wait before touching SRS circuits Confirm the code and inspect the left rear sensor area Inspect and reseat the rear and side airbag sensor connectors Test the sensor circuit for opens and shorts Replace the failed sensor only after tests fail

B1638 Left rear airbag sensor fails its initialization

Q: What does B1638 mean on a Toyota?

B1638. Left rear airbag sensor fails its initialization. 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 B1638 mean on a Toyota?

B1638. Left rear airbag sensor fails its initialization. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1638

Failed left rear airbag sensor
Failed left side airbag sensor
Left side airbag sensor harness open or shorted
Failed center airbag sensor assembly
Poor electrical connection

How to fix B1638

Disconnect the battery and wait before touching SRS circuits
Confirm the code and inspect the left rear sensor area
Inspect and reseat the rear and side airbag sensor connectors
Test the sensor circuit for opens and shorts
Replace the failed sensor only after tests fail