U0511 code meaning
Invalid Data Received From Seat Control Module C
What U0511 means
Seat control module C usually serves a seat beyond the two front ones. GM's Saab 9-5 code list assigns the partner slot U0210 to the rear seat heating control module, and Ford labels its rear seat electronics with later letters altogether (SCMK and SCML for the second-row power seats of the 2025 Navigator, SCMJ for the third-row fold module), so module C is anything but uniform. U0511 is stored when frames from module C reach the network but their content is rejected. No public document names U0511. Rear seat modules often sit under carpets or folding mechanisms where harnesses get pinched, a cause more typical here than at the front. Effects: rear seat heating, folding or adjustment unavailable.
U0511 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0511
- Rear seat heating not switching on
- Power folding or adjustment of a rear seat inoperative
Common causes of U0511
- PossibleHarness pinched by rear seat folding or rail mechanism
- PossibleConfiguration of the rear seat module missing after replacement
- Less likelySeat control module C internally faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Seat control module c
What each part of U0511 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 U0511 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 U0511
What does U0511 mean?
U0511 means "Invalid Data Received From Seat Control Module C". Seat control module C usually serves a seat beyond the two front ones. It is a generic code, so it means the same on every make.
Is it safe to drive with U0511?
U0511 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0511 fail an emissions test?
U0511 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 U0511 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will U0511 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.