Diagnostic Trouble Code
B0101 — Electronic Frontal Sensor 2 — Circuit Malfunction
Electronic Frontal Sensor 2 — Circuit Malfunction
Definition
The airbag control module has lost communication with the front impact sensor #2, the companion sensor to B0100. Both sensors must be operational for the SRS system to accurately determine crash severity and deploy airbags appropriately.
Common Causes
- Damaged front impact sensor from collision or debris
- Connector corrosion from moisture intrusion
- Broken wires in the front wiring harness
- Previous front-end repair that disturbed sensor wiring