Body, generic

B011E Fluid Reservoir Level Sensor C

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B011E covers level sensor C. Vehicles that steer by camera and lidar need their own cleaning supply, and there the level reading becomes an operating condition. Uber's application US20180015907A1 shows a sensor-cleaning reservoir with a dedicated liquid level sensor reporting to the vehicle computer; below a threshold the computer lights an indicator or tells a remote operator to refill. The related patent US10220817B2 adds a compressor and solenoid valves and handles pressure and fluid readings beyond their limits in the same way. Whether reservoir C is such a cleaning tank is stated nowhere, and B011E appears in no public manufacturer document. A fault leaves the system unsure whether it can still clean its sensors.

Likely causes

Level sensor C defective or signal implausible
Damaged wiring or connector between sensor and computing module
Dirt or ice in the reservoir disturbing the measurement

Symptoms

  • Refill request or cleaning-system warning without obvious reason
  • Sensor cleaning may be withheld, and assistance functions may restrict themselves when sensors get dirty

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–300
Time0.3–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fluid reservoir level sensor csensor wiring

Related codes

B011CB011DB011FB0120B0121B012F

References: patents.google.com, patents.google.com.