B0101: Sensor Cleaning Air Blower Actuator B

What does B0101 mean?

A fault has been detected in the front crash sensor circuit, used to detect frontal impacts and trigger airbags/pretensioners.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Symptoms

• Warning light or symbol related to the affected system
• Comfort or safety function impaired

Common causes

• High Sensor damaged after minor impact
• Medium Corroded sensor connector behind bumper

Likelihood is a general estimate across vehicles; your make and model may differ.