← Back to Search Severity: Medium

B0666

B0666: Door Locks Actuator Circuit Malfunction

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0666 Mean?

The B0666 code indicates a malfunction in the door locks actuator circuit, which prevents the door locks from functioning properly.
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Symptoms

  • • Door locks do not operate
  • • may be stuck or jammed
  • • or may not respond to the unlock/lock button.
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Common Causes

  • • Faulty door locks actuator
  • • wiring issue
  • • or a problem with the body control module.
Fix Guide
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Possible Solutions

1. Check the door locks actuator for any signs of damage or corrosion. Replace if necessary. 2. Inspect the wiring harness for any signs of damage or wear. Repair or replace if necessary. 3. Check the body control module for any fault codes. Clear any codes and retest. 4. If the issue persists, replace the body control module.

❓ Common Questions About B0666

Can I drive with code B0666?

You can drive for a short time, but should address code B0666 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0666?

The estimated repair cost for code B0666 is between $100 and $500. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0666 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 B0666 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 B0666

B0664 Sequential Code

B0664: Airbag System Deployment Sensor Circuit Malfunction

High
B0665 Sequential Code

B0665: Climate Control Fan Motor Malfunction

Medium
B0667 Sequential Code

B0667: Power Window Regulator Malfunction

Medium
B0668 Sequential Code

B0668: Seat Position Sensor Circuit 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