U02B1Lost Communication With Comfort and Convenience Display A
- Generic OBD-II code · Network
- How the car detects it
- Comfort and convenience displays are touch screens for climate, seats and similar settings, separate from the main infotainment screen. Stellantis calls them CCDM; on the Jeep Grand Wagoneer a front unit (CCDMF) is joined by a rear unit (CCDMR) for the second row, and the front one can lock out the rear. Which of them counts as A is not published. U02B1 is set when display A no longer answers the module that polls it, so its touch inputs and status vanish from the network. No manufacturer documents U02B1 itself. Field cases of these screens concern firmware: phantom touches cured by newer parts (STAR S228A000013) and wrong massage graphics fixed by a newer part and proxi alignment (S2508000061). Driving is unaffected.
- What you may notice
- Comfort display stays dark or does not react
- Climate or seat settings cannot be changed from that screen
- Likely causes
- LikelyLoose or damaged connector behind the display, often after dash work
- PossibleFuse, supply or ground of the display interrupted
- PossibleDisplay module or its firmware failed
- RareLow battery voltage during start-up
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.