Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System
📖 What Does B0066 Mean?
The B0066 code indicates a malfunction in the door locks actuator circuit, which may cause issues with door locking and unlocking functions.
⚠️
Symptoms
- • Door locks may not function properly
- • or may lock/unlock randomly
- • or may not respond to key fob commands.
🔍
Common Causes
- • Faulty door locks actuator
- • wiring issues
- • faulty body control module
- • or a malfunctioning door lock switch.
Fix Guide
🛠️
Possible Solutions
1. Check and repair or replace faulty wiring. 2. Test and replace the door locks actuator if necessary. 3. Update the body control module software if necessary. 4. Check and repair or replace the door lock switch if necessary.
Required Parts
Tools
Multimeter
Scan tool
Torx screwdriver
Pliers
👨🔧
Need a Pro?
Complex codes like B0066 can be tricky. Don't risk it if you're unsure.
Quick Stats
Severity
Medium
DIY Friendly
No
Est. Time
1-2 hours
🔗
Related Diagnostic Codes
Other codes that may appear with B0066
B0000
Same System
Airbag System Malfunction (B0000)
High
B0001
Same System
Body System Code B0001: Climate Control Malfunction
Medium
B0002
Same System
Body System Code B0002: Door Locks Malfunction
Medium
B0003
Same System
Body System Code B0003: Windows
Medium
B0004
Same System
Seat Position Sensor Malfunction
Medium
B0005
Same System
Body System Code B0005: Lighting 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