U0210Lost Communication With Seat Control Module C
- Generic OBD-II code · Network
- How the car detects it
- U0210 flags lost contact with seat control module C. GM fills the slot in two ways: the 2011 Saab 9-5 list assigns it to the rear seat heating module, while bulletin 23-NA-206 and its predecessor PIT5762F (2020–2023 Escalade, Tahoe, Suburban, Yukon, Corvette, CT4, CT5) name the passenger front seat bladder control module, i.e. the air cells for lumbar support or massage. There U0210 is one of many history codes caused by software anomalies; they set no MIL or message and are simply ignored, whereas a current U0210 is diagnosed as usual. A real dropout shows as dead rear seat heaters or a passenger lumbar or massage function that no longer reacts. No MIL.
- What you may notice
- Rear seat heating inoperative
- Passenger lumbar support or massage does not react
- Code stored only in history without any complaint
- Likely causes
- LikelyHistory entry from a software anomaly (GM 2020–2023, ignore if not current)
- PossibleSeat harness unplugged or pinched
- PossibleFuse or supply of the seat module
- RareSeat module C faulty
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.