Body, generic

B012F A/V Sensor Washer Fluid A Control Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B012F reports a fault in the control circuit for A/V sensor washer fluid A, the first of six such circuits, with B0130 to B0134 following. A/V most likely stands for autonomous vehicle; the circuit drives the pump or valve that delivers fluid to one sensor. Uber's patent family (US20180015907A1, US10220817B2) shows the layout: one reservoir, a set of pumps the vehicle computer starts individually for each camera or lidar cleaner, plus compressed air through solenoid valves. Ford's US10569746B2 has the computer run a wash pump when it judges a sensor window dirty. Which sensor A serves is not published; no maker documents B012F. If the circuit fails, sensor A goes uncleaned and automated driving functions may restrict themselves.

Likely causes

Pump motor or valve coil for fluid circuit A open or shorted
Damaged wiring or corroded connector in the control circuit
Driver stage in the controlling module defective

Symptoms

  • Sensor A is no longer washed, camera or lidar view stays dirty
  • Assistance or automated driving functions report sensor blocked or become unavailable

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–400
Time0.3–2 h

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

Parts involved

av washer fluid pump apump wiring

Related codes

B0130B0131B0132B0133B0134B011E

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