Code
U0492
Generic
U — Network/User
Invalid Data Received From Television
AI status
Completed
Completed
100%
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
- Retrieve and record all DTCs and freeze frame data from all modules. Note occurrence frequency and ignition state.
- Clear DTCs and attempt to reproduce. If the code returns immediately or consistently, proceed to step 3.
- Inspect power, ground, and connector at the television/infotainment module. Repair any damage or corrosion.
- With a scan tool, monitor the TV module messages: confirm correct CAN ID, DLC, signal timing and any checksum status.
- Check for conflicting or duplicate node IDs or messages from aftermarket devices; disconnect aftermarket devices and retest.
- 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
Repair manuals
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Code
U0492
HYUNDAI
U — Network/User
Invalid Data Received From Television
AI status
Completed
Completed
100%
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
- Retrieve and record all DTCs and freeze frame data from all modules. Note occurrence frequency and ignition state.
- Clear DTCs and attempt to reproduce. If the code returns immediately or consistently, proceed to step 3.
- Inspect power, ground, and connector at the television/infotainment module. Repair any damage or corrosion.
- With a scan tool, monitor the TV module messages: confirm correct CAN ID, DLC, signal timing and any checksum status.
- Check for conflicting or duplicate node IDs or messages from aftermarket devices; disconnect aftermarket devices and retest.
- 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
Repair manuals
Manual library for HYUNDAI
371
Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
HYUNDAI
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HYUNDAI: 2023
-
Elantra
-
Elantra N
-
Kona N
-
Tucson
- Hybrid Blue
- Hybrid Limited
- Hybrid SEL Convenience
- Limited, Eng CD G4EN, 4WD
- Limited, Eng CD G4EN, FWD
- Limited, Eng CD G4KN, 4WD
- Limited, Eng CD G4KN, FWD
- N Line, Eng CD G4EN, 4WD
- N Line, Eng CD G4EN, FWD
- N Line, Eng CD G4KN, 4WD
- N Line, Eng CD G4KN, FWD
- Plug-In Hybrid Limited
- Plug-In Hybrid SEL
- SE, Eng CD G4EN, 4WD
- SE, Eng CD G4EN, FWD
- SE, Eng CD G4KN, 4WD
- SE, Eng CD G4KN, FWD
- SEL, Eng CD G4EN, 4WD
- SEL, Eng CD G4EN, FWD
- SEL, Eng CD G4KN, 4WD
- SEL, Eng CD G4KN, FWD
- XRT, Eng CD G4EN, 4WD
- XRT, Eng CD G4EN, FWD
- XRT, Eng CD G4KN, 4WD
- XRT, Eng CD G4KN, FWD
-
-
HYUNDAI: 2022
-
Elantra N
-
Kona N
-
Veloster N
-
HYUNDAI: 2021
-
Veloster N
-
HYUNDAI: 2020
-
Palisade
-
Veloster N
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