OBD Guide
ENFRDEESPT

B1814

Wiper Rear Motor Down Relay Coil Circuit Failure

B1814 is an OBD-II diagnostic trouble code meaning: Wiper Rear Motor Down Relay Coil Circuit Failure. Common causes: open or short circuit in wiring harness, rear wiper relay malfunction. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Rear wiper does not work
  • Rear windshield wiper does not work correctly
  • Rear windshield wiper does not turn on

Causes

  • Open or short circuit in wiring harness
  • Rear wiper relay malfunction
  • Problems with the control unit

How to Fix

  1. Check wiring harness for damage
  2. Check rear wiper relay
  3. Check the control unit for errors
  4. Replace faulty components

Related codes

B1815B1816

FAQ

What does the B1814 code mean?

B1814 is an OBD-II diagnostic trouble code that indicates: Wiper Rear Motor Down Relay Coil Circuit Failure

What causes a B1814 error code?

The most common causes of B1814 include: Open or short circuit in wiring harness; Rear wiper relay malfunction; Problems with the control unit.

How do I fix a B1814 diagnostic trouble code?

To fix B1814: Check wiring harness for damage. Check rear wiper relay. Check the control unit for errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1814?

Limited driving only, diagnose soon

How much does it cost to fix B1814?

The estimated repair cost for B1814 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat