U0170low severityNetwork
Lost Communication with Blind Spot Detection Module
on 2013 Mazda CX-9 3.5L V6 · AWD
What this code means
Cannot communicate with the blind spot monitoring system module.
Symptoms
- Blind spot indicators not working
- BSM warning light
- Blind spot system disabled message
- Side mirror indicators off
Common causes
- BSM module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- BSM sensor blocked or damaged
Diagnostic steps
- Check BSM module fuse
- Test power and ground
- Check CAN wiring
- Inspect BSM sensors in rear bumper
- Clean sensor area
- Test module with diagnostics
Repair notes
Check fuses. BSM sensors in rear bumper can be damaged or blocked by dirt/ice.
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