U0215
NetworkModule Communicationmoderate severityLost Communication With Door Control Module B
What U0215 Means
The network has lost communication with door control module B. Window, lock, and mirror functions for that door may stop working.
Symptoms
- Power window inoperative
- Door lock not responding
- Mirror adjustment dead
Common Causes
- Faulty door control module B
- Damaged wiring in door boot
- Corroded connector
- Blown fuse
Diagnostic Steps
- Scan all modules for codes
- Check module power and ground
- Inspect door boot harness
- Verify CAN bus signal
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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