LIN Bus A (-) Open
2017-2020 Tesla Model 3 Standard Range Plus Single Motor RWD 🇨🇦
Description
The LIN bus A ground reference is open, preventing proper LIN communication.
Symptoms
- LIN slave devices not responding
- Erratic LIN device behavior
Common Causes
- LIN ground wire open
- Corroded ground connection
- Broken ground splice
Diagnostic Steps
- Check LIN ground continuity
- Inspect ground connection points
- Test for proper ground at LIN devices
Repair Notes
Repair the open ground on the LIN bus circuit.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0039 on Other Vehicles
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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
2021-2024 Long Range Dual Motor AWD
Tesla Model 3
2021-2024 Performance Dual Motor AWD
Tesla Model 3
2021-2024 Standard Range Single Motor RWD
Common Questions
What does code U0039 mean on a 2017-2020 Tesla Model 3?
U0039 stands for "LIN Bus A (-) Open". The LIN bus A ground reference is open, preventing proper LIN communication.
What are the symptoms of U0039 on a Tesla Model 3?
Common symptoms of U0039 include: LIN slave devices not responding, Erratic LIN device behavior.
What causes U0039 on a 2017-2020 Tesla Model 3?
Common causes of U0039 include: LIN ground wire open, Corroded ground connection, Broken ground splice.