U0180: Lost Communication With Automatic Lighting Control Module
MediumNetwork/CommunicationCommunication Bus
What does U0180 mean?
U0180 is a diagnostic trouble code indicating "Lost Communication With Automatic Lighting Control Module". The vehicle's main computer has lost its ability to communicate with a specific module over the data bus. This could be caused by a wiring fault, a blown fuse, or a failed control module.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Possible issues with communication bus operation
- Vehicle may enter reduced power mode (limp mode)
Estimated repair cost
Typical range in Australia (parts + labour)
$200 – $1500 AUD
Common causes
- Failed control module
- CAN bus wiring fault or short
- Blown fuse to the affected module
- Water intrusion in a connector or module
- Battery voltage too low
What should you do?
This code sits in the exterior lighting. Nothing about how the car drives changes, but how easily other road users see you does, and a light out is an on-the-spot fine and an inspection failure. Worth sorting before you next drive at night.
Get a diagnosis for YOUR car
Code U0180 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.