Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / U0512 — Invalid Data Received From “Seat Control Module D”

U0512 — Invalid Data Received From “Seat Control Module D”

Detailed page for trouble code U0512.

35,619codes
59brands
11,925generic
23,694specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

U0512

HYUNDAI U — Network/User

Invalid Data Received From “Seat Control Module D”

Brand: HYUNDAI
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Seat Control Module D hardware fault
  • Corroded, loose or damaged connector at the seat control module
  • Open, shorted, or intermittent CAN/LIN wiring or poor splice
  • Incorrect module programming or software mismatch
  • Low battery voltage or poor ground affecting module operation
  • Aftermarket accessories or recent repairs that disturbed wiring

Symptoms

  • Seat functions (position, memory, heaters, lumbar) partially or completely inoperative
  • One or more network warning indicators or diagnostic messages displayed
  • Erratic or intermittent seat behavior (stutters, resets)
  • Unable to read or program Seat Control Module D with scan tool
  • Possible illumination of generic network fault lamp or stored U-codes

What to check

  • Record freeze-frame and full network DTC list with a capable OBD-II/CAN scan tool
  • Visually inspect seat connector(s), pins and harness for corrosion, damage or water
  • Check battery voltage and chassis/body grounds before and during tests
  • Verify CAN bus termination (~60 ohms across CAN_H and CAN_L) and look for shorts to Vb or ground
  • Use a scan tool to observe live CAN messages from Seat Control Module D and related nodes
  • Wiggle test wiring and connectors while monitoring for intermittent DTCs or message loss

Signal parameters

  • Protocol: CAN (ISO 15765-4) or manufacturer network (may include LIN for submodules)
  • Typical CAN frame length: up to 8 bytes (classical CAN) or variable for CAN FD; message ID and payload are manufacturer-defined
  • Message contents commonly include seat position, motor status, heater state, memory index and diagnostic flags
  • Message frequency: periodic transmissions (varies by function) and event-driven messages; missing or malformed frames trigger U0512
  • Integrity checks: checksum, CRC or defined data format expected by receiving modules

Diagnostic algorithm

  1. Use a capable scan tool to read U0512 and any related U- or B-/C-/P-codes. Note occurrence conditions and freeze-frame data.
  2. Confirm vehicle battery is charged and stable (12.4–12.8 V at rest, >13.5 V with engine running).
  3. Attempt to communicate directly with Seat Control Module D via the scan tool. If no communication, suspect power/ground/wiring or module failure.
  4. Inspect and reconnect seat module connectors; check for bent pins, corrosion or water entry. Repair or replace damaged connectors.
  5. Check module power and ground circuits at the connector (voltage, continuity to battery and chassis ground). Repair any faults.
  6. Verify CAN bus integrity: measure termination resistance, and if available use an oscilloscope to view CAN_H and CAN_L for proper differential signals and no excessive noise.
  7. Monitor live CAN traffic: confirm the seat module transmits correct periodic frames and that checksum/format appears valid. If messages are malformed, suspect the module.
  8. If wiring and physical layer are good but invalid data persists, check for recent software updates or recalls; reprogram or reflashes the seat module to the latest calibration per manufacturer procedure.
  9. If reprogramming fails or module still sends invalid data, replace the seat control module and verify that all related modules accept the new unit and that the code does not return.
  10. Clear DTCs and perform a road test / function test to confirm repair. Re-scan to ensure no recurrence.

Likely causes

  • Bad or intermittent CAN bus physical layer (termination, short to battery/ground)
  • Seat module failing and transmitting malformed CAN messages
  • Connector pins pushed out, bent, corroded, or not fully seated
  • Module lost configuration or received incompatible calibration after service
  • Intermittent power or ground to the seat module causing corrupted frames

Fault status

⚠️ Status
Invalid Data Received From Seat Control Module D — network messages from that module are malformed, missing required fields, or fail integrity checks.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-3.0 hours
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

HYUNDAI

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .