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Home / DTC / U052F — Invalid Data Received From Object Detection Maintenance Control Module A

U052F — Invalid Data Received From Object Detection Maintenance Control Module A

Detailed page for trouble code U052F.

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Code

U052F

Generic U — Network/User

Invalid Data Received From Object Detection Maintenance Control Module A

Brand: Generic
Type: U — Network/User
Views: UK: 12 EN: 19 RU: 16
AI status
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Page language: EN

Causes

  • Faulty Object Detection Maintenance Control Module A (internal fault or software error)
  • Corroded, loose, or damaged connector(s) at the module
  • Wiring short to battery or ground, open circuit, or intermittent harness damage on communication lines
  • Network bus fault (CAN/LIN) such as missing termination, high bus error rate, or high/low short
  • Module software/calibration mismatch or missing reflash/programming
  • Low battery or unstable vehicle supply voltage during communication

Symptoms

  • Malfunction Indicator Lamp (MIL) or service warning illuminated
  • Object detection / ADAS features may be disabled, reduced, or show faults
  • Diagnostic trouble codes present for related modules
  • Intermittent or permanent loss of object detection messages in scan tool data
  • Erratic or stale sensor/object data reported in scan-tool live data

What to check

  • Read and record all U-codes and related codes from all modules with a capable scan tool
  • Check freeze frame and stored network error counters or bus-off history
  • Visually inspect connectors and wiring at the object detection module and along the network splice points
  • Verify vehicle battery voltage and charging system stability during testing
  • Use a scan tool to monitor the expected messages/frames from the object detection module (IDs, frequency, DLC)
  • Measure CAN_H and CAN_L voltages at the module connector with key on, engine off

Signal parameters

  • Bus type: CAN (commonly 250 kbps or 500 kbps) or LIN depending on vehicle; verify manufacturer-specific bus and baud rate
  • Message format: standard CAN frames with 0–8 byte payload (DLC 0–8)
  • Expected message frequency: periodic messages typically every 20–1000 ms (manufacturer-specific)
  • Electrical idle: CAN_H and CAN_L near mid-supply (~2.5 V each); dominant state differential typically ~2 V (CAN_H higher, CAN_L lower)
  • Termination: ~60 ohms measured across CAN_H and CAN_L (two 120 ohm resistors in parallel)
  • Checksum / CRC: some object-detection messages include a CRC or checksum—invalid CRC indicates corrupted data

Diagnostic algorithm

  1. Capture and save all DTCs and freeze-frame data from all modules. Note any other communication codes.
  2. Confirm battery voltage is healthy (12.4–12.8 V at rest) and charging system is stable. Recharge or maintain battery if low.
  3. With a qualified scan tool, observe live data: verify whether the object detection module is present on the bus and if its messages are received. Note message IDs, frequency, and payload validity.
  4. Perform a visual inspection of the module connectors and harness for corrosion, bent pins, water intrusion, or physical damage. Repair or clean as needed.
  5. Check termination resistance across CAN_H and CAN_L at multiple points on the network. Look for open or incorrect termination.
  6. Using a scope or high-speed CAN tester, verify CAN_H/CAN_L signal integrity while module is communicating. Look for excessive noise, missing recessive/dominant levels, or bus errors.
  7. Wiggle-test the harness and connectors while monitoring for changes in network messages or error counters to find intermittent faults.
  8. If wiring and signals are good, verify module software level and calibration against manufacturer data. Reprogram or update module if required and available.
  9. If module programming is current and wiring/signals are good, substitute a known-good module (if available) or bench-test the suspect module per manufacturer procedures before replacement.
  10. After repair or module replacement, clear codes and re-run diagnostics. Confirm normal message flow, restore any required calibrations or learn procedures, and road-test to verify function.

Likely causes

  • Poor connector contact or bent pins at the object detection module
  • Broken or chafed CAN/LIN wires near harness joints or moving parts
  • Failed module hardware or corrupted firmware
  • Missing or incorrect module configuration after replacement or software update
  • High error/frame rate observed on the bus caused by another module

Fault status

⚠️ Status
Invalid data or malformed messages were received from the Object Detection Maintenance Control Module A on the vehicle network. This can be caused by poor wiring/connectors, a failed module, bus errors, or incorrect module software/configuration.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

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U0100 U0073 U0140 U0422
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