OBD Guide
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B1843

Wiper Front Power Circuit Short To Ground

B1843 is an OBD-II diagnostic trouble code meaning: Wiper Front Power Circuit Short To Ground. Common causes: wiring harness damage, short circuit in the wiper motor. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Front wipers don't work
  • The wipers are unstable
  • Wiper circuit fuse blows

Causes

  • Wiring harness damage
  • Short circuit in the wiper motor
  • Faulty wiper relay
  • Corrosion of contacts in connectors
  • Problems with the control unit

How to Fix

  1. Visually inspect the wiring harness for damage
  2. Checking the fuse and wiper relay
  3. Diagnostics of the wiper motor
  4. Checking circuit continuity with a multimeter
  5. Repair or replace damaged components

Related codes

B1844B1845

FAQ

What does the B1843 code mean?

B1843 is an OBD-II diagnostic trouble code that indicates: Wiper Front Power Circuit Short To Ground

What causes a B1843 error code?

The most common causes of B1843 include: Wiring harness damage; Short circuit in the wiper motor; Faulty wiper relay; Corrosion of contacts in connectors.

How do I fix a B1843 diagnostic trouble code?

To fix B1843: Visually inspect the wiring harness for damage. Checking the fuse and wiper relay. Diagnostics of the wiper motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1843?

Limited driving only, diagnose soon

How much does it cost to fix B1843?

The estimated repair cost for B1843 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat