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Home / DTC / U0514 — Invalid Data Received From Mirror Control Module A

U0514 — Invalid Data Received From Mirror Control Module A

Detailed page for trouble code U0514.

35,619codes
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11,925generic
23,694specific
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Code

U0514

Generic U — Network/User

Invalid Data Received From Mirror Control Module A

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

Causes

  • Faulty Mirror Control Module A (internal fault or bad software)
  • Intermittent or poor power or ground to the mirror module
  • Damaged, corroded, or loose connectors or wiring for the mirror module
  • CAN or LIN bus wiring fault (short to power/ground, high resistance, open, or intermittent)
  • Bus termination or impedance problem (missing/failed terminator)
  • Other module on the same bus sending corrupted messages

Symptoms

  • Mirror functions intermittent or inoperative (adjust, fold, heating, memory)
  • Diagnostic trouble codes stored for mirror or network communication
  • Other modules on same bus showing communication errors or odd behavior
  • Malfunction indicator or message on dash related to mirror or systems
  • Erratic mirror movement or incorrect mirror position reporting

What to check

  • Read all stored and pending DTCs with a capable scan tool (record freeze frame and data)
  • Check for related network codes (U0xxx, U0073, U0100, U0155, etc.)
  • Verify ignition on voltage to mirror module fuse and battery voltage at module connector
  • Inspect module connectors for corrosion, bent pins, water intrusion, or damage
  • Visually inspect wiring harness along door hinge and mirror for chafing or breaks
  • Check ground connections for tightness and corrosion at chassis and module

Signal parameters

  • CAN_H and CAN_L idle voltages (~2.5 V each, ~0 V differential)
  • LIN bus idle voltage (if mirror uses LIN) and message wake pulses
  • Presence and frequency of Mirror Control Module A message ID on bus (messages/sec)
  • Error counters or bus-off status reported by scan tool
  • Module supply voltage and ground continuity at connector pins
  • Mirror position, fold state, and heater status parameters reported by the module

Diagnostic algorithm

  1. Connect scan tool and record current and history DTCs. Note related U-codes and freeze frame data.
  2. Verify the mirror module has proper power and ground with ignition on. Check fuse continuity and battery voltage at module pins.
  3. Visually inspect the module connector, wiring through the door hinge, and mirror housing for damage, corrosion, or water ingress. Repair or replace damaged wiring/connectors.
  4. Clear the code and operate mirror functions while monitoring for return of U0514. Intermittent codes after manipulation indicate wiring/connector issue.
  5. Using a lab scope or CAN/LIN analyzer, verify the mirror module’s message is present and correctly formed on the bus. Look for missing messages, incorrect voltage levels, excessive noise, or malformed frames.
  6. If bus voltage or waveform abnormal, trace bus wiring for shorts, opens, or poor terminations. Check/replace termination resistors if applicable.
  7. If the module does not appear on the bus but has power/ground, check for blown fuse, internal module failure, or a stuck bus by disconnecting other nodes and retesting.
  8. Reflash or update mirror module software if manufacturer has a known software fix or calibration available, then retest.
  9. If wiring and bus are verified good and software up to date, replace Mirror Control Module A and confirm repairs by clearing codes and road-testing.
  10. After repair, verify no related U-codes remain and that mirror functions are fully restored. Document repair and any replaced parts.

Likely causes

  • Poor connector/wiring or intermittent power/ground to the mirror module
  • Corrupted messages due to CAN/LIN bus wiring fault or termination issue
  • Faulty Mirror Control Module A (hardware/software) after wiring ruled out

Fault status

⚠️ Status
Invalid data received from Mirror Control Module A — communication or message corruption detected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.5 hours

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Code

U0514

HYUNDAI U — Network/User

Invalid Data Received From Mirror Control Module

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

Causes

  • Faulty Mirror Control Module A (internal fault or bad software)
  • Intermittent or poor power or ground to the mirror module
  • Damaged, corroded, or loose connectors or wiring for the mirror module
  • CAN or LIN bus wiring fault (short to power/ground, high resistance, open, or intermittent)
  • Bus termination or impedance problem (missing/failed terminator)
  • Other module on the same bus sending corrupted messages

Symptoms

  • Mirror functions intermittent or inoperative (adjust, fold, heating, memory)
  • Diagnostic trouble codes stored for mirror or network communication
  • Other modules on same bus showing communication errors or odd behavior
  • Malfunction indicator or message on dash related to mirror or systems
  • Erratic mirror movement or incorrect mirror position reporting

What to check

  • Read all stored and pending DTCs with a capable scan tool (record freeze frame and data)
  • Check for related network codes (U0xxx, U0073, U0100, U0155, etc.)
  • Verify ignition on voltage to mirror module fuse and battery voltage at module connector
  • Inspect module connectors for corrosion, bent pins, water intrusion, or damage
  • Visually inspect wiring harness along door hinge and mirror for chafing or breaks
  • Check ground connections for tightness and corrosion at chassis and module

Signal parameters

  • CAN_H and CAN_L idle voltages (~2.5 V each, ~0 V differential)
  • LIN bus idle voltage (if mirror uses LIN) and message wake pulses
  • Presence and frequency of Mirror Control Module A message ID on bus (messages/sec)
  • Error counters or bus-off status reported by scan tool
  • Module supply voltage and ground continuity at connector pins
  • Mirror position, fold state, and heater status parameters reported by the module

Diagnostic algorithm

  1. Connect scan tool and record current and history DTCs. Note related U-codes and freeze frame data.
  2. Verify the mirror module has proper power and ground with ignition on. Check fuse continuity and battery voltage at module pins.
  3. Visually inspect the module connector, wiring through the door hinge, and mirror housing for damage, corrosion, or water ingress. Repair or replace damaged wiring/connectors.
  4. Clear the code and operate mirror functions while monitoring for return of U0514. Intermittent codes after manipulation indicate wiring/connector issue.
  5. Using a lab scope or CAN/LIN analyzer, verify the mirror module’s message is present and correctly formed on the bus. Look for missing messages, incorrect voltage levels, excessive noise, or malformed frames.
  6. If bus voltage or waveform abnormal, trace bus wiring for shorts, opens, or poor terminations. Check/replace termination resistors if applicable.
  7. If the module does not appear on the bus but has power/ground, check for blown fuse, internal module failure, or a stuck bus by disconnecting other nodes and retesting.
  8. Reflash or update mirror module software if manufacturer has a known software fix or calibration available, then retest.
  9. If wiring and bus are verified good and software up to date, replace Mirror Control Module A and confirm repairs by clearing codes and road-testing.
  10. After repair, verify no related U-codes remain and that mirror functions are fully restored. Document repair and any replaced parts.

Likely causes

  • Poor connector/wiring or intermittent power/ground to the mirror module
  • Corrupted messages due to CAN/LIN bus wiring fault or termination issue
  • Faulty Mirror Control Module A (hardware/software) after wiring ruled out

Fault status

⚠️ Status
Invalid data received from Mirror Control Module A — communication or message corruption detected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.5 hours

Similar codes

U0513 U0100 U0073 U0155 U0121
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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