Diagnostic Trouble Code
B0100 — Electronic Frontal Sensor 1 — Circuit Malfunction
Electronic Frontal Sensor 1 — Circuit Malfunction
Definition
The airbag control module has lost communication with the front impact sensor #1, typically located behind the bumper or in the front crush zone. This sensor provides critical crash deceleration data.
Common Causes
- Damaged front impact sensor from minor collision
- Corroded sensor connector from road debris exposure
- Wiring harness damage in the front end
- Faulty airbag control module