ShopBaseFree forever shop management software for auto repair shops
Try ShopBase Free →
Home/DTC Codes/Tesla/Model S/2014-2016 P85D Dual Motor AWD/U0056
U0056

LIN Bus B Communication Performance

2014-2016 Tesla Model S P85D Dual Motor AWD

Low SeverityNetworkGeneric (SAE)

Description

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

  1. Check LIN bus B voltage levels
  2. Test LIN B wiring resistance
  3. Inspect LIN B device connections
  4. Test individual LIN B slave devices

Repair Notes

Check LIN bus B wiring and slave device connections.

Related Codes

U0037LIN Bus A Communication Performance

Other Network Codes

U0056 on Other Vehicles

Tesla Cybertruck

2024-2024 Cyberbeast Tri Motor AWD

Tesla Cybertruck

2024-2024 Dual Motor AWD

Tesla Cybertruck

2024-2024 Single Motor RWD

Tesla Model 3

2017-2020 Long Range Dual Motor AWD

Tesla Model 3

2017-2020 Performance Dual Motor AWD

Tesla Model 3

2017-2020 Standard Range Plus Single Motor RWD

Tesla Model 3

2021-2024 Long Range Dual Motor AWD

Tesla Model 3

2021-2024 Performance Dual Motor AWD

Common Questions

What does code U0056 mean on a 2014-2016 Tesla Model S?

U0056 stands for "LIN Bus B Communication Performance". Communication on LIN bus B is degraded or intermittent.

What are the symptoms of U0056 on a Tesla Model S?

Common symptoms of U0056 include: Specific LIN B devices intermittent, HVAC blend door actuator issues, Seat heater communication errors.

What causes U0056 on a 2014-2016 Tesla Model S?

Common causes of U0056 include: LIN bus B wiring degradation, LIN slave device fault on bus B, High resistance in LIN B circuit.

View Labor Times | View Torque Specs | View Fluid Specs