U0056low severityNetwork
LIN Bus B Communication Performance
on 2011 Hyundai Tucson 2.0L I4 · AWD
What this code means
Communication on LIN bus B is degraded or intermittent.
Symptoms
- Specific LIN B devices intermittent
- HVAC blend door actuator issues
- Seat heater communication errors
Common causes
- LIN bus B wiring degradation
- LIN slave device fault on bus B
- High resistance in LIN B circuit
Diagnostic steps
- Check LIN bus B voltage levels
- Test LIN B wiring resistance
- Inspect LIN B device connections
- Test individual LIN B slave devices
Repair notes
Check LIN bus B wiring and slave device connections.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0005
High Speed CAN Communication Bus (+) High