B0460low severityBody
Infotainment System Communication Error
on 2007 Cadillac SRX 3.6L V6 · AWD
What this code means
Communication loss between the infotainment head unit and other vehicle modules on the entertainment bus.
Symptoms
- Infotainment screen blank
- No audio output
- Navigation not working
- Vehicle settings inaccessible
- Backup camera not displaying
Common causes
- Head unit internal failure
- CAN/MOST bus wiring issue
- Head unit software crash
- Power supply fault
- Connector corrosion
Diagnostic steps
- Attempt system reboot (hold power button)
- Check head unit power and ground
- Scan for communication faults
- Inspect bus wiring
- Check for software updates
Repair notes
Reboot head unit first. If persistent, check bus wiring or replace head unit.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0005
Driver Knee Airbag Deployment Circuit