U0125high severityNetwork
Lost Communication with Multi-axis Acceleration Sensor
on 2005-2011 Audi A6 4.2L V8 · AWD
What this code means
Cannot communicate with the multi-axis accelerometer module used for stability and rollover detection.
Symptoms
- Stability control disabled
- Rollover protection disabled
- ESC warning light on
Common causes
- Multi-axis sensor failure
- CAN bus wiring issue
- Module power loss
- Sensor damage from impact
Diagnostic steps
- Check sensor module fuse
- Test power and ground
- Inspect CAN wiring
- Check sensor for physical damage
- Test sensor output
Repair notes
Multi-axis sensors are used in rollover protection systems. Critical safety component.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus