U0121
Lost Communication with ABS Module
2012-2012 Volvo XC60 3.0L Turbo I6
High SeverityNetworkGeneric (SAE)
The 2012 Volvo XC60 is equipped with a 3.0L inline-6 turbocharged gasoline engine. Below you'll find detailed u0121 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the Anti-lock Brake System module.
Symptoms
- ABS light on
- Traction control disabled
- Stability control disabled
Common Causes
- ABS module power failure
- CAN bus wiring
- ABS module failure
- Fuse blown
Diagnostic Steps
- Check ABS fuses
- Test module power and ground
- Check CAN wiring
- Try direct communication
Repair Notes
Check fuses first. Common on water-damaged vehicles.
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
U0121 on Other Vehicles
Common Questions
What does code U0121 mean on a 2012-2012 Volvo XC60?
U0121 stands for "Lost Communication with ABS Module". Cannot communicate with the Anti-lock Brake System module.
What are the symptoms of U0121 on a Volvo XC60?
Common symptoms of U0121 include: ABS light on, Traction control disabled, Stability control disabled.
What causes U0121 on a 2012-2012 Volvo XC60?
Common causes of U0121 include: ABS module power failure, CAN bus wiring, ABS module failure, Fuse blown.
Last updated: March 2026