Body, generic

B0190 Front Wiper Park Switch Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

No known public source lists B0190, neither a J2012 table nor a carmaker document. The part named in the title is common: a cam on the wiper gear opens or closes contacts, so the control knows when the blades are at rest and can keep the motor running until they get there. Controllers also use this signal for protection. In US5694011A a timer set longer than one wipe cycle cuts the motor if the park signal stops changing, which catches blades frozen to the glass; US4320329A treats a missing park position after a cycle as a blocked motor and lengthens the pause. A patent by FCA, US8598828B2, filters the contact signal so noise is not taken for a state change. With a faulty circuit the blades may stop anywhere, keep sweeping after switch-off, or intermittent mode misbehaves.

Likely causes

Park contacts in the wiper motor gear housing worn, dirty or corroded by water
Park signal wire or connector at the wiper motor open or shorted
Fuse or relay in the park supply circuit failed

Symptoms

  • Wipers stop in the field of view instead of at the bottom of the screen
  • Wipers keep running after being switched off or intermittent mode fails

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–350
Time0.5–2 h

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

Parts involved

wiper motorwiper park switchbody control module

Related codes

B0192B0220B0900

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