OBD Guide
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B1550

Power Window Master Circuit Short To Ground

B1550 is an OBD-II diagnostic trouble code meaning: Power Window Master Circuit Short To Ground. Common causes: wiring harness damage, short circuit in power window motors. Estimated repair cost: $33–167.

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

Symptoms

  • Power windows don't work
  • Power window circuit fuses trip
  • Spontaneous movement of glass
  • Failure of the power window control unit

Causes

  • Wiring harness damage
  • Short circuit in power window motors
  • Malfunction of the power window control unit
  • Contact corrosion
  • Damage to door wiring

How to Fix

  1. Check the condition of the power window circuit fuses
  2. Visually inspect the wiring harness for damage.
  3. Check the resistance of the window motors
  4. Diagnose the power window control unit
  5. Check the integrity of the wiring in the doors
  6. Replace damaged components

Related codes

B1551B1552B1553

FAQ

What does the B1550 code mean?

B1550 is an OBD-II diagnostic trouble code that indicates: Power Window Master Circuit Short To Ground

What causes a B1550 error code?

The most common causes of B1550 include: Wiring harness damage; Short circuit in power window motors; Malfunction of the power window control unit; Contact corrosion.

How do I fix a B1550 diagnostic trouble code?

To fix B1550: Check the condition of the power window circuit fuses. Visually inspect the wiring harness for damage.. Check the resistance of the window motors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1550?

Limited driving only, diagnose soon

How much does it cost to fix B1550?

The estimated repair cost for B1550 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat