OBD Guide
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B1406

Driver Power Window Down Circuit Short To Ground

B1406 is an OBD-II diagnostic trouble code meaning: Driver Power Window Down Circuit Short To Ground. Common causes: damaged wiring harness, faulty window motor. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Driver's window does not roll down
  • The glass goes down jerkily
  • Power window fuse blows

Causes

  • Damaged wiring harness
  • Faulty window motor
  • Problem with power window control unit
  • Short circuit in wiring

How to Fix

  1. Check wiring harness for damage
  2. Check the window lift motor
  3. Check the power window control unit
  4. Replace damaged components

Related codes

B1405B1407B1408

FAQ

What does the B1406 code mean?

B1406 is an OBD-II diagnostic trouble code that indicates: Driver Power Window Down Circuit Short To Ground

What causes a B1406 error code?

The most common causes of B1406 include: Damaged wiring harness; Faulty window motor; Problem with power window control unit; Short circuit in wiring.

How do I fix a B1406 diagnostic trouble code?

To fix B1406: Check wiring harness for damage. Check the window lift motor. Check the power window control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1406?

Limited driving only, diagnose soon

How much does it cost to fix B1406?

The estimated repair cost for B1406 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat