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Home / DTC / U0566 — Invalid Data Received From Image Processing Sensor A

U0566 — Invalid Data Received From Image Processing Sensor A

Detailed page for trouble code U0566.

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Code

U0566

Generic U — Network/User

Invalid Data Received From Image Processing Sensor A

Brand: Generic
Type: U — Network/User
Views: UK: 17 EN: 21 RU: 9
AI status
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ready
Completed 100%
Page language: EN

Causes

  • Faulty/failing image processing sensor (camera) hardware
  • Damaged or corroded connector or wiring between camera and network module
  • Power supply or ground fault to the camera
  • CAN/FlexRay/automotive Ethernet data bus faults or excessive noise
  • Software/configuration mismatch or corrupted module firmware
  • Intermittent connections from mechanical damage or moisture

Symptoms

  • ADAS warnings or messages (e.g., camera fault, lane assist unavailable, adaptive cruise disabled)
  • Malfunction indicator or warning lamp related to driver assist systems
  • Loss of camera-based functions (lane keep, traffic sign recognition, automatic braking)
  • Intermittent or permanent failure of features that use camera data
  • Diagnostic trouble codes related to communication and data validity

What to check

  • Read all stored U-codes and manufacturer freeze frame/extended data with a capable scan tool
  • Check for other communication codes (U0100, U0121, U0146, etc.) that indicate network issues
  • Visually inspect camera, mount, lens, and harness for damage, corrosion or water intrusion
  • Inspect and reseat connectors at the camera and gateway/module
  • Measure camera supply voltage and ground at the connector with ignition ON
  • Check CAN or Ethernet signal integrity with a scope or dedicated bus analyzer

Signal parameters

  • Camera supply: typical switched 12 V (check vehicle-specific value) and stable under load
  • Camera reference voltage: some modules use 5 V reference for sensors — verify if present
  • CAN bus idle voltages: CAN_H ≈ 2.5–3.5 V, CAN_L ≈ 1.5–2.5 V (dominant/recessive transitions measured with scope)
  • CAN bus termination resistance: approx. 60 Ω between CAN_H and CAN_L
  • Message rate/period: expected image-processing messages or ADAS frame messages (manufacturer-specific Hz)
  • CRC/checksum validity and packet error count (use manufacturer diagnostics or bus analyzer)

Diagnostic algorithm

  1. Use a full-featured scan tool. Read and record U0566 plus any other codes, freeze frame, and manufacturer extended data.
  2. Note when fault set (ignition state, vehicle speed, ambient conditions) and whether fault is stored as current, pending, or historical.
  3. Visually inspect camera assembly, lens, and harness. Check connector for bent pins, corrosion, or moisture. Reseat connectors.
  4. With ignition ON, measure camera supply voltage and ground at the camera connector. Compare to spec. Repair any open/faulty power or ground circuits.
  5. Check network communication: use a scope or bus analyzer to view CAN or automotive Ethernet signals at the camera and gateway. Look for noise, missing messages, or abnormal voltages.
  6. Verify CAN termination resistance between CAN_H and CAN_L (~60 Ω). Isolate segments if needed to locate a short/open.
  7. If intermittent, perform wiggle test of harness and connectors while monitoring live data for errors or message drops.
  8. Check module and camera software/calibration versions. Reflash or perform required software updates per manufacturer bulletin if versions are mismatched or known-bad.
  9. If wiring and power are good and bus integrity confirmed, swap in a known-good camera or module (if available) or bench-test camera per factory procedure.
  10. After repair or replacement, clear codes and perform system relearn/calibration and a road test to confirm ADAS functions and that U0566 does not return.
  11. If problem persists, escalate to manufacturer-specific diagnostic procedures or refer to technical service bulletins.

Likely causes

  • Camera module internal fault or failing image processor
  • Poor connector pin contact or corrosion at camera harness
  • CAN bus termination missing or high bit error rate on bus
  • Camera not receiving correct 12V/5V supply or missing ground
  • Recent software update or module replacement without correct programming

Fault status

⚠️ Status
Invalid or corrupted data received from Image Processing Sensor A. ADAS functions that rely on this camera may be disabled until communication and data integrity are restored.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0100 U0121 U0146 U0155 U0416 U0417
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