U0039
LIN Bus A (-) Open
1998-2008 Volkswagen Pointer 1.8L I4 🇩🇪
Low SeverityNetwork
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
Volkswagen Amarok BR
2010-2025 2.0L I4 TDI Diesel
Volkswagen Amarok BR
2018-2025 3.0L V6 TDI Diesel
Volkswagen Arteon
2019-2024 2.0L Turbo I4
Volkswagen Atlas
2018-2024 2.0L Turbo I4
Volkswagen Atlas
2018-2024 3.6L V6
Volkswagen Atlas Cross Sport
2020-2024 2.0L Turbo I4
Volkswagen Atlas Cross Sport
2020-2024 3.6L V6
Volkswagen Beetle
2012-2019 2.0L Turbo I4
Common Questions
What does code U0039 mean on a 1998-2008 Volkswagen Pointer?
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 Volkswagen Pointer?
Common symptoms of U0039 include: LIN slave devices not responding, Erratic LIN device behavior.
What causes U0039 on a 1998-2008 Volkswagen Pointer?
Common causes of U0039 include: LIN ground wire open, Corroded ground connection, Broken ground splice.