Body, generic

B0192 Front Wiper Speed Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0192 is publicly unverifiable: it appears neither in a J2012 list nor in any carmaker's documents. A performance fault, unlike the circuit fault B0220, means the wiring may be fine while the wipers sweep too slowly or irregularly. Speed is usually judged from the park contact, which closes once per revolution. US5216340A uses exactly this on cars with two wiper motors: from the timing and the back-EMF voltage seen at each park contact it detects that one motor runs faster and briefly holds it back until both are in step again. US5694011A shows the extreme case, a motor so loaded by frozen or stuck blades that the park signal stops. Bosch now also offers brushless and reversing drives whose electronics set speed and end positions themselves. Typical result: smeared, slow or out-of-step wiping.

Likely causes

Wiper linkage pivots dry, corroded or binding, slowing the motor
Worn motor brushes or commutator, reduced torque and speed
Blades frozen to the glass or heavily loaded by snow

Symptoms

  • Wipers sweep noticeably slower than usual, especially on high speed
  • Wiper arms judder, hesitate or run out of step with each other

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–350
Time0.5–2 h

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

Parts involved

wiper motorwiper linkage

Related codes

B0220B0190B0900

References: patents.google.com, patents.google.com, bosch-mobility.com.