B0100Sensor Cleaning Air Blower Actuator A
- Generic OBD-II code · Body
- Can trigger limp mode
- How the car detects it
- B0100 is the general fault for air blower A in a sensor cleaning system, i.e. the fan or motor unit itself rather than its wiring or relay (those are B0102 and B0104). Such blowers keep camera lenses and lidar windows clear of droplets, dust and insects. Ford's patent US12115948B2 mounts a blower on the sensor bracket; it pulls outside air through an intake duct and pushes it out across a cylindrical lidar window and a camera lens. In Ford's roof-mounted sensor tiara for its self-driving test fleet, slots release an air curtain that deflects most bugs, and air also dries a lens after washing. Which blower is A is up to the maker. No vehicle manufacturer documents B0100 publicly. A dead blower lets dirt build up until the sensor reports itself blocked.
- What you may notice
- Sensor blocked or cleaning fault message
- Driver assistance or automated driving functions limited or switched off
- No airflow audible or felt at the sensor outlets
- Likely causes
- LikelyBlower A motor worn, seized or with an open winding
- PossibleImpeller blocked by ice, leaves or debris in the intake duct
- RareCorroded or loose plug directly at blower A
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.