OBD-II CODE
Medium
B0091
B0091: Power Window Relay Circuit Malfunction
Est. Repair Cost
$50 - $200
Difficulty
3/5
Repair Time
1-2 hours
🩺 What Does B0091 Mean?
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
⚠️ Symptoms
Windows may not move up or down, or may move slowly or erratically.
🔍 Common Causes
Faulty power window relay, faulty window switch, wiring issue, or blown fuse.
Doctor's Orders
🛠️ How to Fix B0091
1. Check the fuse box for a blown fuse and replace it if necessary. 2. Check the wiring harness for damage or corrosion and repair or replace as needed. 3. Test the power window relay and replace it if faulty. 4. Test the window switch and replace it if faulty.
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