What are the common causes of U0223?

Damage to the harness or connector between the PCM and door window motor B. A failed door window motor B. Corrosion or water at the motor B connections. A short in the motor B wiring. A PCM or control module fault.

Inspect the harness and connector between the PCM and motor B. Check the motor B connector for corrosion or water. Test door window motor B for operation. Check the motor B circuit for shorts. Replace door window motor B if it does not respond. Clear the code and retest.

U0223

Lost Communication With Door Window Motor B

System: Network communication (U code)
Lamp: Check Engine Light
Category: Network Communications

What it means

U0223 means Lost Communication With Door Window Motor B.

Check these first

Damage to the harness or connector between the PCM and door window motor B
A failed door window motor B
Corrosion or water at the motor B connections
A short in the motor B wiring
A PCM or control module fault

What to do next

Inspect the harness and connector between the PCM and motor B
Check the motor B connector for corrosion or water
Test door window motor B for operation
Check the motor B circuit for shorts
Replace door window motor B if it does not respond
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.