Error code
OBD2 U0181
OBD2U0181
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Lost Communication With Headlamp Leveling Control Module.
Severity
moderateCan be driven, but may experience issues with headlight leveling functions.
Summary
U0181 indicates lost communication with the headlamp leveling control module, which is part of the data bus system.
Common Causes
- Faulty or damaged wiring between the headlamp level control module and other modules
- Headlamp level control module failure
Fixes
FAQ
How can I diagnose U0181?
Use a diagnostic tool to check for specific error codes related to the headlamp level control module and inspect wiring connections.
What should I do if I encounter this code?
Consult a professional mechanic or use an OBD-II scanner to diagnose the issue further. Repairing or replacing faulty components may be necessary.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- U0100Lost Communication With ECM/PCM A
- U0101Lost Communication with TCM
- U0102Lost Communication with Transfer Case Control Module
- U0103Lost Communication With Gear Shift Module
- U0104Lost Communication With Cruise Control Module
- U0105Lost Communication With Fuel Injector Control Module
- U0106Lost Communication With Glow Plug Control Module
- U0107Lost Communication With Throttle Actuator Control Module
- U0108Lost Communication With Alternative Fuel Control Module
- U0109Lost Communication With Fuel Pump Control Module
- U0110Lost Communication With Drive Motor Control Module
- U0111Lost Communication With Battery Energy Control Module 'A'