B0100 code meaning
Sensor Cleaning Air Blower Actuator A
What B0100 means
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.
B0100 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0100
- 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
Common causes of B0100
- Most likelyBlower A motor worn, seized or with an open winding
- PossibleImpeller blocked by ice, leaves or debris in the intake duct
- Less likelyCorroded or loose plug directly at blower A
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Sensor cleaning air blower aObject detection maintenance module a
What each part of B0100 means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 00 | The exact fault in that area. |
What to do next
- Note B0100 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about B0100
What does B0100 mean?
B0100 means "Sensor Cleaning Air Blower Actuator A". B0100 is the general fault for air blower A in a sensor cleaning system, i.e. It is a generic code, so it means the same on every make.
Is it safe to drive with B0100?
Drive gently and only to a workshop. With B0100 the car can go into limp mode (reduced power) to protect itself.
Will B0100 fail an emissions test?
B0100 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is B0100 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B0100 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.