Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / U0222 — Lost Communication With “Door Window Motor A”

U0222 — Lost Communication With “Door Window Motor A”

Detailed page for trouble code U0222.

34,488codes
59brands
11,925generic
22,563specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

U0222

HYUNDAI U — Network/User

Lost Communication With “Door Window Motor A”

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

Causes

  • Faulty/failed door window motor or motor driver module
  • Open, short, or damaged wiring in the door harness (common at door hinge flex area)
  • Corroded, disconnected, or bent connector pins at the door module/motor or body control module (BCM)
  • Blown fuse or poor power/ground to the motor/module
  • CAN bus or LIN bus wiring fault, high resistance, or missing termination
  • Faulty BCM, door control module, or gateway module

Symptoms

  • Affected door window does not respond to switch or auto up/down commands
  • Intermittent window operation or operation only from certain switches
  • Network communication DTCs stored (U0222 and possibly other U-codes)
  • Possible other module messages or features disabled related to that door
  • No audible or abnormal noise from the motor when commanding the window

What to check

  • Read all stored codes with a capable scan tool and note freeze-frame and related U-codes
  • Check fuses and relays for power to door/window circuits
  • Visually inspect door hinge/jamb wiring, connectors and grommets for damage or corrosion
  • Wiggle test wiring while commanding window and watch live data/code creation
  • Check for CAN/LIN bus errors or bus-off conditions using a diagnostic tool
  • Measure supply voltage and ground at the motor/module connector with key on and during commands

Signal parameters

  • CAN bus idle common-mode ~2.5 V; dominant state: CAN_H ≈ 3.5 V, CAN_L ≈ 1.5 V (differential ≈ 2 V)
  • Motor supply voltage: approximately battery voltage (~12 V) when commanded
  • Motor current draw: typically several amps when moving (varies by vehicle), large spikes possible at start
  • Communication: periodic CAN messages from door module; absence or bus errors indicate comm fault
  • LIN-controlled actuators may use 12 V supply with LIN data line at 0–12 V pulse levels (vehicle specific)

Diagnostic algorithm

  1. Connect a diagnostic scanner that can read Hyundai network messages. Record all U-codes and related modules.
  2. Clear codes and attempt to reproduce failure. Note when and how U0222 returns to help isolate intermittent faults.
  3. Verify power and ground: check relevant fuses and measure battery voltage at the motor/module power pin(s).
  4. Inspect wiring and connectors at the affected door (door jamb, harness grommet, motor connector) for damage, corrosion, or pin issues.
  5. Perform a wiggle test of the door harness while commanding the window; watch live data and note any change or code set.
  6. Check CAN/LIN bus integrity: measure CAN_H and CAN_L voltages at the door module connector with key on; look for normal idle and dominant states with scope.
  7. If communication is present but motor does not run, apply bench power or command motor supply (vehicle-specific safe procedure) and measure current to determine motor/driver health.
  8. If wiring and power are good but no communication to the motor driver/module, consider replacing or reflashing the door module or BCM per manufacturer procedures.
  9. After repair or component replacement, clear codes, verify operation and perform final road/functional test. Check for software updates/TSBs if repeated failures occur.

Likely causes

  • Damaged wiring in the door jamb (flex point) causing intermittent communication
  • Connector corrosion or pin backout at the door module or motor connector
  • Failed window motor internal controller (motor driver) that no longer responds to commands
  • Loss of power or ground to the motor/module (blown fuse, poor ground)
  • CAN/LIN network fault between door module and vehicle gateway/BCM

Fault status

⚠️ Status
Lost Communication With 'Door Window Motor A' — module not responding on vehicle network or failing to acknowledge commands.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5-3.0 hours

Similar codes

U0100 U0121 U0141 U0155 U1000
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

HYUNDAI

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .