OBD Guide
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B1446

Wiper Park Sense Circuit Failure

B1446 is an OBD-II diagnostic trouble code meaning: Wiper Park Sense Circuit Failure. Common causes: open or shorted wiring harness, oxidation of sensor contacts. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Wipers do not return to park position
  • Intermittent wiper operation
  • Triggering emergency operation of wipers

Causes

  • Open or shorted wiring harness
  • Oxidation of sensor contacts
  • Parking sensor malfunction
  • Problems with the relay or wiper motor
  • Short circuit in the circuit

How to Fix

  1. Check the condition of the wiring harness to the parking sensor
  2. Clean the sensor contacts from corrosion
  3. Check the sensor resistance (compare with manufacturer's specifications)
  4. If necessary, replace the parking sensor
  5. Check the operation of the windshield wiper gear motor

Related codes

B1445B1447B1448

FAQ

What does the B1446 code mean?

B1446 is an OBD-II diagnostic trouble code that indicates: Wiper Park Sense Circuit Failure

What causes a B1446 error code?

The most common causes of B1446 include: Open or shorted wiring harness; Oxidation of sensor contacts; Parking sensor malfunction; Problems with the relay or wiper motor.

How do I fix a B1446 diagnostic trouble code?

To fix B1446: Check the condition of the wiring harness to the parking sensor. Clean the sensor contacts from corrosion. Check the sensor resistance (compare with manufacturer's specifications). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1446?

Limited driving only, diagnose soon

How much does it cost to fix B1446?

The estimated repair cost for B1446 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat