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Home / DTC / U0492 — Invalid Data Received From Television

U0492 — Invalid Data Received From Television

Detailed page for trouble code U0492.

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Code

U0492

Generic U — Network/User

Invalid Data Received From Television

Brand: Generic
Type: U — Network/User
Views: UK: 14 EN: 24 RU: 19
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corrupted or malformed CAN/LIN message from the television/infotainment module
  • Faulty television/infotainment module (software or hardware)
  • Network wiring: damaged wire, short to power/ground, poor connector pin contact
  • Low or unstable supply voltage to the television module
  • Software/calibration mismatch between modules (after update or replacement)
  • Faulty or missing termination resistor on the bus

Symptoms

  • Infotainment/TV displays incorrect data, freezes or blanks
  • Related modules set additional U-codes or lose communication
  • Warning or information messages on dash regarding infotainment
  • Intermittent operation of features that rely on the TV/infotainment data (audio, camera, navigation)
  • No drivability symptoms in many cases, but features may be degraded

What to check

  • Read all stored DTCs and freeze frame data from all modules with a manufacturer-capable scan tool
  • Check for related U-codes or B/C/P codes that point to the same network or module
  • Visually inspect connectors and wiring at the television/infotainment module for corrosion, bent pins, or damage
  • Verify battery voltage and ground integrity while the vehicle is operating
  • Check for aftermarket devices (backup cameras, head units, network adapters) that share the bus
  • Use a scan tool to view live network messages and verify message IDs, length, and frequency

Signal parameters

  • Source module ID: infotainment/TV module CAN/LIN node (varies by vehicle)
  • Message ID (CAN ID) and expected period (e.g., periodic X ms) — compare to factory data
  • Data length code (DLC) and expected payload format/bit fields
  • Expected value ranges for key signals (e.g., screen status, video enable flags, checksum bytes)
  • Checksum or CRC field present in some proprietary messages — must validate
  • Bus voltages: CAN_H ~2.5V idle, CAN_L ~2.5V idle; differential ~0V idle, ~2V dominant

Diagnostic algorithm

  1. Retrieve and record all DTCs and freeze frame data from all modules. Note occurrence frequency and ignition state.
  2. Clear DTCs and attempt to reproduce. If the code returns immediately or consistently, proceed to step 3.
  3. Inspect power, ground, and connector at the television/infotainment module. Repair any damage or corrosion.
  4. With a scan tool, monitor the TV module messages: confirm correct CAN ID, DLC, signal timing and any checksum status.
  5. Check for conflicting or duplicate node IDs or messages from aftermarket devices; disconnect aftermarket devices and retest.
  6. Measure CAN bus signals with an oscilloscope or CAN tester to look for noise, missing termination, or voltage irregularities.

Likely causes

  • Software bug or incomplete module programming after service
  • Intermittent connector or wiring fault at the television module
  • Other module misinterpreting a valid message due to wrong configuration (ID mismatch)
  • Vehicle battery voltage drop or poor ground affecting message integrity

Fault status

⚠️ Status
Invalid or corrupt data received from the television/infotainment module over the vehicle network. The receiving control module rejected the message due to unexpected format, out-of-range values, or failed integrity check.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0100 U0140 U0155 U0416 U0490 U0493
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Code

U0492

HYUNDAI U — Network/User

Invalid Data Received From Television

Brand: HYUNDAI
Type: U — Network/User
Views: UK: 9 EN: 16 RU: 17
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corrupted or malformed CAN/LIN message from the television/infotainment module
  • Faulty television/infotainment module (software or hardware)
  • Network wiring: damaged wire, short to power/ground, poor connector pin contact
  • Low or unstable supply voltage to the television module
  • Software/calibration mismatch between modules (after update or replacement)
  • Faulty or missing termination resistor on the bus

Symptoms

  • Infotainment/TV displays incorrect data, freezes or blanks
  • Related modules set additional U-codes or lose communication
  • Warning or information messages on dash regarding infotainment
  • Intermittent operation of features that rely on the TV/infotainment data (audio, camera, navigation)
  • No drivability symptoms in many cases, but features may be degraded

What to check

  • Read all stored DTCs and freeze frame data from all modules with a manufacturer-capable scan tool
  • Check for related U-codes or B/C/P codes that point to the same network or module
  • Visually inspect connectors and wiring at the television/infotainment module for corrosion, bent pins, or damage
  • Verify battery voltage and ground integrity while the vehicle is operating
  • Check for aftermarket devices (backup cameras, head units, network adapters) that share the bus
  • Use a scan tool to view live network messages and verify message IDs, length, and frequency

Signal parameters

  • Source module ID: infotainment/TV module CAN/LIN node (varies by vehicle)
  • Message ID (CAN ID) and expected period (e.g., periodic X ms) — compare to factory data
  • Data length code (DLC) and expected payload format/bit fields
  • Expected value ranges for key signals (e.g., screen status, video enable flags, checksum bytes)
  • Checksum or CRC field present in some proprietary messages — must validate
  • Bus voltages: CAN_H ~2.5V idle, CAN_L ~2.5V idle; differential ~0V idle, ~2V dominant

Diagnostic algorithm

  1. Retrieve and record all DTCs and freeze frame data from all modules. Note occurrence frequency and ignition state.
  2. Clear DTCs and attempt to reproduce. If the code returns immediately or consistently, proceed to step 3.
  3. Inspect power, ground, and connector at the television/infotainment module. Repair any damage or corrosion.
  4. With a scan tool, monitor the TV module messages: confirm correct CAN ID, DLC, signal timing and any checksum status.
  5. Check for conflicting or duplicate node IDs or messages from aftermarket devices; disconnect aftermarket devices and retest.
  6. Measure CAN bus signals with an oscilloscope or CAN tester to look for noise, missing termination, or voltage irregularities.

Likely causes

  • Software bug or incomplete module programming after service
  • Intermittent connector or wiring fault at the television module
  • Other module misinterpreting a valid message due to wrong configuration (ID mismatch)
  • Vehicle battery voltage drop or poor ground affecting message integrity

Fault status

⚠️ Status
Invalid or corrupt data received from the television/infotainment module over the vehicle network. The receiving control module rejected the message due to unexpected format, out-of-range values, or failed integrity check.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0100 U0140 U0155 U0416 U0490 U0493
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