Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Body
System
📖 What Does B0133 Mean?
The B0133 code indicates a malfunction in the body control module's (BCM) ability to control the exterior lighting system, such as the headlights, taillights, or brake lights.
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Symptoms
- • Inoperative or flickering exterior lights
- • warning lights on the dashboard
- • or a combination of both.
🔍
Common Causes
- • Faulty BCM
- • wiring issues
- • blown fuses
- • or a malfunctioning exterior light module.
Fix Guide
🛠️
Possible Solutions
1. Check the BCM and exterior light module for any signs of physical damage or corrosion. 2. Inspect the wiring harness for any signs of damage or wear. 3. Check the fuses and replace any blown ones. 4. Test the exterior lights to isolate the faulty component. 5. Replace the faulty component(s) and retest the system.
Required Parts
Tools
Multimeter
Wire tester
Torx screwdriver
👨🔧
Need a Pro?
Complex codes like B0133 can be tricky. Don't risk it if you're unsure.
Quick Stats
Severity
Medium
DIY Friendly
Yes
Est. Time
1-2 hours
🔗
Related Diagnostic Codes
Other codes that may appear with B0133
B0100
Same System
B0100: Seat Position Sensor Malfunction
Medium
B0101
Same System
B0101: Body System Code B0101 - Lighting
Medium
B0102
Same System
B0102: Immobilizer System Malfunction
Medium
B0103
Same System
B0103: Audio System Malfunction
Medium
B0104
Same System
B0104: Airbag System Malfunction
High
B0105
Same System
B0105: Climate Control Blower Motor Fault
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