CAN Communication Bus Fault - No Message
2013-2021 Peugeot 308 1.2L I3 PureTech 🇩🇪
Description
A required CAN bus message is not being received. A specific module is not broadcasting its data.
Symptoms
- Specific system not responding
- Warning light for affected system
- Feature disabled
- Other modules compensating
Common Causes
- Module not powered
- Module failure
- CAN bus wiring open for that module
- Module in sleep mode stuck
- Fuse blown for module
Diagnostic Steps
- Identify which module message is missing
- Check fuse for that module
- Test power and ground
- Check CAN wiring to specific module
- Try to wake module with scan tool
Repair Notes
Identify the non-broadcasting module and check its power supply and CAN bus connection.
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
U1001 on Other Vehicles
Peugeot 108
2014-2021 1.0L I3 VTi 72
Peugeot 108
2014-2021 1.2L I3 PureTech 82
Peugeot 2008
2019-2024 1.2L I3 PureTech
Peugeot 2008
2019-2024 Electric
Peugeot 2008
2019-2025 1.2L I3 Turbo PureTech 130
Peugeot 2008
2020-2025 Electric e-2008 50kWh
Peugeot 2008 PL
2019-2025 1.2L I3 Turbo PureTech 130
Peugeot 2008 PL
2019-2025 1.5L I4 Diesel BlueHDi 110
Common Questions
What does code U1001 mean on a 2013-2021 Peugeot 308?
U1001 stands for "CAN Communication Bus Fault - No Message". A required CAN bus message is not being received. A specific module is not broadcasting its data.
What are the symptoms of U1001 on a Peugeot 308?
Common symptoms of U1001 include: Specific system not responding, Warning light for affected system, Feature disabled, Other modules compensating.
What causes U1001 on a 2013-2021 Peugeot 308?
Common causes of U1001 include: Module not powered, Module failure, CAN bus wiring open for that module, Module in sleep mode stuck, Fuse blown for module.