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Home / DTC / U0562 — Invalid Data Received From Seat Control Switch Module “B”

U0562 — Invalid Data Received From Seat Control Switch Module “B”

Detailed page for trouble code U0562.

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Code

U0562

HYUNDAI U — Network/User

Invalid Data Received From Seat Control Switch Module “B”

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

Causes

  • Faulty Seat Control Switch Module "B" (internal fault or corrupted firmware)
  • Intermittent or open/short in wiring between module and CAN bus or ground/power
  • Poor connector contact (corrosion, bent pins, water intrusion)
  • CAN bus termination or grounding problem causing corrupted frames
  • Module programming/software mismatch after repair or update
  • Interference from aftermarket electronics or other network faults

Symptoms

  • Seat functions affected (no response, intermittent operation, or incorrect behavior)
  • Seat memory or seat heater functions may not work
  • Related warning or message on instrument cluster
  • Other modules reporting related communication codes
  • DTC U0562 stored in network or receiving module

What to check

  • Read all stored DTCs and freeze frame data with a manufacturer-capable scan tool
  • Check for related communication codes (other U0xxx codes) and note occurrence conditions
  • Visually inspect seat connector pins, harness for damage, corrosion, or loose terminals
  • Verify module supply voltage and ground at the seat control switch module
  • Check CAN bus voltage levels and termination resistances at the module connector
  • Wiggle test wiring while monitoring live data/messages for intermittent faults

Signal parameters

  • CAN message ID assigned to Seat Control Switch Module "B" (verify expected ID)
  • Data Length Code (DLC) — expected number of bytes per frame for seat switch message
  • Message transmit rate (Hz) — check expected frequency vs observed
  • Data byte mapping: switch positions, heater/memory bits, reserved bytes (verify values in range)
  • Checksum/CRC or parity field (if used) — verify integrity value matches calculation
  • Bus idle and dominant/recessive voltage levels and noise on CAN high/low

Diagnostic algorithm

  1. Record the code(s) and freeze frame. Note when the code set (key on engine off, during operation, after impacts).
  2. Clear codes and attempt to reproduce. If code does not return, suspect intermittent wiring/connectors.
  3. Perform a visual inspection of the seat switch module connector and wiring harness for damage, corrosion, or water ingress.
  4. With ignition ON, verify module supply voltage and good ground at the module connector.
  5. Using a scan tool, monitor the seat switch message on the CAN network (ID, DLC, data bytes, frequency). Compare values to expected specification or a known-good vehicle.
  6. If message shows corrupted data or incorrect frequency, inspect CAN high/low voltages and check termination (120 Ω overall) and continuity to other nodes.
  7. Wiggle harnesses and connectors while monitoring CAN messages to identify intermittent faults.
  8. If wiring and bus are good, reflash/update module software per manufacturer procedure. Ensure correct calibration file for vehicle options.
  9. If reprogramming does not clear the fault, replace the Seat Control Switch Module "B" and program/configure the new unit. Re-test and confirm repair.
  10. If multiple modules show communication errors, broaden diagnostics to entire CAN segment and consider body control module or gateway faults.

Likely causes

  • Connector or wiring issue at seat control switch module
  • Module internal failure or corrupted firmware
  • CAN bus wiring fault (short to battery/ground or high impedance)
  • Missing or incorrect module programming after replacement

Fault status

⚠️ Status
Invalid data/frame received from Seat Control Switch Module "B": data bytes out of expected range or corrupted message (checksum/format error) leading to communication fault.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 2.5 hours

Similar codes

U0560 U0561 U0563 U0073 U0100 U0121
371

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