U0121high severityNetwork
Lost Communication with ABS Module
on 2011 Dodge Charger 5.7L V8 Hemi · AWD
What this code means
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.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0005
High Speed CAN Communication Bus (+) High