Error code
OBD2 U0221
OBD2U0221
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Lost Communication With 'Door Switch G'.
Severity
moderateCan continue driving but may experience inconvenience with door-related functions.
Summary
U0221 indicates that there is no communication between the car's data bus system and the door switch G, which monitors the status of a specific door.
Common Causes
- Faulty door contact switch G
- Data bus wiring issues or damage
Fixes
- Replace the faulty door contact switch G
FAQ
What does U0221 mean?
U0221 means there is a communication issue between the car's data bus and the door switch G.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 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'
- U0206Lost Communication With Folding Top Control Module
- U0207Lost Communication With Moveable Roof Control Module
- U0208Lost Communication With 'Seat Control Module A'
- U0209Lost Communication With 'Seat Control Module B'
- U0210Lost Communication With 'Seat Control Module C'
- U0211Lost Communication With 'Seat Control Module D'