← Back to Search Severity: Medium

B0379

B0379: Power Window Relay Circuit Malfunction

Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0379 Mean?

The power window relay circuit has malfunctioned, preventing the windows from functioning properly. This code is typically set when the window relay circuit is open or shorted.
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Symptoms

  • • Windows do not operate
  • • may have a slow or erratic movement
  • • or may be stuck in one position.
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Common Causes

  • • Faulty power window relay
  • • wiring issues
  • • corrosion
  • • or damage to the window switch or motor.
Fix Guide
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Possible Solutions

1. Disconnect the battery to reset the system. 2. Check the power window relay for signs of physical damage or corrosion. 3. Test the relay circuit using a multimeter to identify any shorts or opens. 4. Replace the power window relay if faulty. 5. Inspect and clean the wiring and connectors for corrosion or damage. 6. Replace the window switch or motor if necessary.

❓ Common Questions About B0379

Can I drive with code B0379?

You can drive for a short time, but should address code B0379 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0379?

The estimated repair cost for code B0379 is between $50 and $200. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0379 easy to fix myself?

This repair is considered moderate. It may require specialized tools or significant disassembly. If you are not an experienced mechanic, professional help is recommended.

Required Parts

Tools

Multimeter Wire tester Torx screwdriver
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Need a Pro?

Complex codes like B0379 can be tricky. Don't risk it if you're unsure.

Quick Stats

Severity Medium
DIY Friendly No
Est. Time 1-2 hours
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Related Diagnostic Codes

Other codes that may appear with B0379

B0377 Sequential Code

B0377: Climate Control Fan Not Operating

Medium
B0378 Sequential Code

B0378: Door Lock Actuator Circuit Malfunction

Medium
B0380 Sequential Code

B0380: Seat Switch Circuit Malfunction

Medium
B0381 Sequential Code

B0381: Turn Signal Lamp Malfunction

Medium

💡 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