What Does U0180 Mean?
The vehicle's control modules cannot communicate with the automatic lighting control module on the network. This affects automatic headlamp, daytime running light, and interior lighting functions.
Common Causes
30%
Faulty automatic lighting control module
25%
Damaged wiring or connector to lighting control module
20%
Blown fuse to lighting control module
15%
CAN bus communication circuit fault
10%
Poor module ground connection
Diagnostic Steps
1
Step 1: Check all fuses related to the automatic lighting control module and replace if blown
2
Step 2: Inspect connector at lighting control module for bent pins, corrosion, or moisture
3
Step 3: Test for battery voltage and ground at module connector using multimeter
4
Step 4: Monitor CAN bus communication signals (CAN High/Low) at lighting module with scan tool or oscilloscope
5
Step 5: Replace automatic lighting control module if power, ground, and communication circuits are intact
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
The vehicle's control modules cannot communicate with the automatic lighting control module on the network. This affects automatic headlamp, daytime running light, and interior lighting functions.
The most common cause of U0180 (Lost Communication With Automatic Lighting Control Module) is: Faulty automatic lighting control module
Typical repair costs for U0180 range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Automatic headlamps may not function properly, potentially leaving vehicle without lights in low-visibility conditions. Manual operation may still be available.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0180 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Network
System
Lighting System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
