← Back to Search Severity: Medium

B0578

B0578: Door Locks Actuator Circuit Malfunction

Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0578 Mean?

The Body Control Module (BCM) has detected a malfunction in the door locks actuator circuit, preventing proper door lock/unlock functionality.
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Symptoms

  • Door locks may not function
  • or may function intermittently
  • with symptoms including difficulty locking/unlocking doors
  • or doors not responding to key fob or door switch inputs.
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Common Causes

  • Faulty door locks actuator
  • wiring issues
  • or a malfunctioning BCM.
Fix Guide
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Possible Solutions

1. Check door locks actuator for proper function and replace if faulty. 2. Inspect wiring for damage or corrosion and repair as needed. 3. Update BCM software if necessary. 4. Test door locks actuator circuit for proper function.

Common Questions About B0578

Can I drive with code B0578?

You can drive for a short time, but should address code B0578 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0578?

The estimated repair cost for code B0578 is between $100 and $300. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0578 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 Wiring tester
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Need a Pro?

Complex codes like B0578 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 B0578

💡 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