📖 What Does B0939 Mean?
Symptoms
- • Window fails to move
- • or moves erratically
- • when operated from the driver's door switch or the key fob.
Common Causes
- • Faulty window regulator motor
- • faulty door switch
- • wiring issue
- • or blown fuse.
Possible Solutions
Disconnect the battery to reset the system. Check the fuse and replace it if blown. Inspect the wiring and repair or replace as needed. Replace the window regulator motor if faulty.
Fixing this on your car?
Get a vehicle-specific repair guide with exact parts, oil specs, and torque settings for your make and model.
🚙 Get Vehicle-Specific Fix Guide
Select your vehicle to see a customized repair guide with exact parts and specifications:
❓ Common Questions About B0939
Can I drive with code B0939?
You can drive for a short time, but should address code B0939 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix B0939?
The estimated repair cost for code B0939 is between $150 and $300. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
Recommended Tools
Need a Pro?
Complex codes like B0939 can be tricky. Don't risk it if you're unsure.
Recommended Tool
Professional OBD2 Scanner
Read & clear codes, view live data, and reset service lights yourself.
View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with B0939
B0937: Climate Control Actuator Malfunction
B0938: Door Lock Actuator Circuit Malfunction
B0940: Seat Position Sensor Malfunction
B0941: Body System Malfunction - Lighting
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system