What are the common causes of U0227?

Damage to the wiring or connector between the BCM and door window motor F control. A failed door window motor F control module. A faulty body control module. A short or corrosion in the motor F circuit. Aftermarket accessories wired wrong.

Inspect the wiring and connector between the BCM and motor F control. Check the motor F connector for corrosion or water. Test the motor F circuit for shorts. Check for aftermarket wiring on the motor F circuit. Replace the door window motor F control module if it stays offline. Clear the code and retest.

U0227

Lost Communication With Door Window Motor F

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

What it means

U0227 means Lost Communication With Door Window Motor F.

Check these first

Damage to the wiring or connector between the BCM and door window motor F control
A failed door window motor F control module
A faulty body control module
A short or corrosion in the motor F circuit
Aftermarket accessories wired wrong

What to do next

Inspect the wiring and connector between the BCM and motor F control
Check the motor F connector for corrosion or water
Test the motor F circuit for shorts
Check for aftermarket wiring on the motor F circuit
Replace the door window motor F control module if it stays offline
Clear the code and retest

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Updated

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