OBD Guide
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B1549

Power Window Master Circuit Short To Battery

B1549 is an OBD-II diagnostic trouble code meaning: Power Window Master Circuit Short To Battery. Common causes: wiring harness damage, malfunction of the electric window control unit. Estimated repair cost: $56–167.

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

Symptoms

  • Power windows don't work
  • Window lifters work spontaneously
  • Fuses blow

Causes

  • Wiring harness damage
  • Malfunction of the electric window control unit
  • Short circuit in electric motors
  • Mechanical damage to system components

How to Fix

  1. Check the integrity of the wiring harness
  2. Check fuses and relays
  3. Diagnose the power window control unit
  4. Check power window motors
  5. Replace damaged components

Related codes

B1548B1550B1551

FAQ

What does the B1549 code mean?

B1549 is an OBD-II diagnostic trouble code that indicates: Power Window Master Circuit Short To Battery

What causes a B1549 error code?

The most common causes of B1549 include: Wiring harness damage; Malfunction of the electric window control unit; Short circuit in electric motors; Mechanical damage to system components.

How do I fix a B1549 diagnostic trouble code?

To fix B1549: Check the integrity of the wiring harness. Check fuses and relays. Diagnose the power window control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1549?

Limited driving only, diagnose soon

How much does it cost to fix B1549?

The estimated repair cost for B1549 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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