U05C0Invalid Data Received From Interior Lighting Control Module B
- Generic OBD-II code · Network
- How the car detects it
- Cars with extensive ambient and cabin lighting split it across several controllers; module B is the second of these, for instance for the rear cabin, the doors or a separate light strip, while A runs the main zone. These nodes usually hang on a LIN line below the body controller, which sends them colour and brightness commands and polls their status; Microchip's reference design runs this at about 10.4 kbit/s with a checksum on every frame. U05C0 is set when status replies from module B arrive but are corrupt or implausible, as opposed to U02BF, where B stops replying. No manufacturer documents U05C0 or the allocation of letter B. Expect zones that stay dark or show the wrong colour, while the main interior lights controlled by module A (U054B) keep working.
- What you may notice
- Ambient light zone stays dark or flickers
- Wrong colour or brightness in part of the cabin
- Lighting settings in the menu not applied to all zones
- Likely causes
- PossibleLED controller of lighting module B defective
- PossibleLIN line or connector to module B damaged, for example in a door hinge area
- RareReplacement module B not configured for its zone
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.