OBD-II code · Network
U0221 Lost Communication with Door Control Module E
The body bus has lost door control module E (e.g. second sliding door). Functions on this door stop working.
Is it safe to drive with U0221?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDoor harness damaged
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Door Control Module, Door Harness
Related codes
- U0200Lost Communication With Door Control Module B
- U0201Lost Communication With Door Control Module C
- U0202Lost Communication With Door Control Module D
- U0203Lost Communication With Door Control Module E
- U0204Lost Communication With Door Control Module F
- U0205Lost Communication With Door Control Module G
- U020BLost Communication With Door Control Module H
- U0220Lost Communication with Door Control Module D
- U0222Lost Communication with Door Control Module F
- U0218Lost Communication with Door Control Module Rear Passenger
- U0219Lost Communication with Liftgate/Decklid Control Module
- U0223Lost Communication With Door Window Motor B
- U0224Lost Communication With Door Window Motor C
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.