High Speed CAN Communication Bus (-) Low
2013-2013 Audi TT 3.2L V6
The 2013 Audi TT is equipped with a 3.2L V6 engine. Below you'll find detailed u0007 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The CAN Low wire voltage is lower than expected, indicating a short to ground.
Symptoms
- Bus communication degraded
- Multiple DTCs stored
- Intermittent module dropouts
Common Causes
- CAN L shorted to ground
- Damaged wiring insulation
- Module fault pulling CAN L low
- Water damage
Diagnostic Steps
- Measure CAN L voltage
- Isolate modules to find fault source
- Inspect wiring for ground contact
- Check for water intrusion
Repair Notes
Repair the CAN L short to ground. Check for damaged wire insulation near metal brackets.
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
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
- U0028Vehicle Communication Bus A Performance
U0007 on Other Vehicles
Common Questions
What does code U0007 mean on a 2013-2013 Audi TT?
U0007 stands for "High Speed CAN Communication Bus (-) Low". The CAN Low wire voltage is lower than expected, indicating a short to ground.
What are the symptoms of U0007 on a Audi TT?
Common symptoms of U0007 include: Bus communication degraded, Multiple DTCs stored, Intermittent module dropouts.
What causes U0007 on a 2013-2013 Audi TT?
Common causes of U0007 include: CAN L shorted to ground, Damaged wiring insulation, Module fault pulling CAN L low, Water damage.
Last updated: March 2026