U0211 code meaning
Lost Communication With Seat Control Module D
What U0211 means
U0211 reports that seat control module D is absent from the bus. GM bulletin 21-NA-131, which replaces PIT5796A (2020–2021 Escalade, Tahoe, Suburban, Yukon and 2021 Corvette, CT4, CT5), names it the memory seat module: the driver assistance controller EOCM records U0211 and invalid data U0512 when software in the memory seat module misbehaves. Auto entry and exit or memory recall then fail, the backrest stops short of full recline, and Super Cruise may drop out with a service message. Reprogramming the driver seat memory module is the cure. Honda bulletin 25-051 (2024 Prologue) removes the same code with new software for the radio control module A11. No MIL.
U0211 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0211
- Seat memory and easy entry/exit inoperative
- Backrest will not recline fully
- Driver assistance message or Super Cruise unavailable
Common causes of U0211
- Most likelyMemory seat module software (GM 21-NA-131, reprogram)
- PossibleRadio control module software (Honda Prologue 25-051)
- Less likelySeat harness or connector under the driver seat
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Seat module dCAN bus
What each part of U0211 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 11 | The exact fault in that area. |
What to do next
- Note U0211 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0211
What does U0211 mean?
U0211 means "Lost Communication With Seat Control Module D". U0211 reports that seat control module D is absent from the bus. It is a generic code, so it means the same on every make.
Is it safe to drive with U0211?
U0211 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0211 fail an emissions test?
U0211 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0211 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. This is a job for a workshop.
Will U0211 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.