C110B on 2011-2018 Audi A8 (Adaptive Cruise Control equipped) — Adaptive Cruise Control Sensor - Restricted View
1 vehicles · 1 makes
Most Reported On
C110B is an OBD-II diagnostic trouble code meaning “Adaptive Cruise Control Sensor - Restricted View.” The distance regulation control module J428 has determined that one or both ACC radar sensors have gone an extended period without detecting any object, which the software interprets as the sensor's field of view being obstructed. ACC and the braking guard are deactivated as a protective measure. Audi TSB 2033355 covers this condition on 2011-2018 A8 and related A6/A7 models. This code is most commonly reported on 2011-2018 Audi A8 (Adaptive Cruise Control equipped).
Common Causes
Diagnostic Tools
C110B does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does C110B mean?
C110B stands for "Adaptive Cruise Control Sensor - Restricted View." The distance regulation control module J428 has determined that one or both ACC radar sensors have gone an extended period without detecting any object, which the software interprets as the sensor's field of view being obstructed. ACC and the braking guard are deactivated as a protective measure. Audi TSB 2033355 covers this condition on 2011-2018 A8 and related A6/A7 models.
What are the most common causes of C110B?
The most common causes of C110B are: Snow, ice, mud, road salt, or heavy dirt on the radar sensor cover or bumper area, Aftermarket license plate frame, bracket, or bumper accessory in front of the sensor, Front-end damage or a repainted/repaired bumper altering radar transmissivity, Radar sensor out of alignment after bumper or suspension work, Extended driving on an empty road with no targets (can set the code benignly), Failed radar sensor requiring replacement and calibration. The specific cause varies by vehicle.
How much does it cost to fix C110B?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by C110B?
Au7o has documented C110B across 1 vehicle models from 1 manufacturers: Audi.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.