U0223: Lost Communication With Door Window Motor B
Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What Does U0223 Mean?
U0223 is a diagnostic trouble code indicating: Lost Communication With Door Window Motor B. This code relates to the manufacturer-specific network system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Symptoms of U0223
- ⚠️ Check Engine Light (MIL) illuminated
- ⚠️ No communication with Door Window Motor B
- ⚠️ Multiple warning lights may illuminate simultaneously
- ⚠️ Related system completely inoperative
- ⚠️ Multiple warning lights on dashboard
Common Causes
- 🔍 CAN bus wiring fault (open or shorted) to Door Window Motor B
- 🔍 Power or ground supply issue to Door Window Motor B
- 🔍 Door Window Motor B internal failure
- 🔍 Water intrusion damaging module or connectors
- 🔍 CAN bus termination resistor fault
Frequently Asked Questions
What does U0223 mean?
Can I drive with code U0223?
How much does it cost to fix U0223?
What To Do Next
Possible Fixes
- 🔧 Inspect CAN bus wiring to Door Window Motor B for damage
- 🔧 Check power and ground supply to Door Window Motor B
- 🔧 Replace failed Door Window Motor B
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.