Fejlkodeindeks · high
D900
CAN bus communication fault [U1900]
CAN bus communication fault [U1900]
Scope: Instrument cluster engineering/self-test · System(s): cluster
Common causes
- CAN wiring/open/short
- module/network failure
- low voltage
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Check module power/grounds and bus wiring before condemning a module
Typical fixes
- Check battery voltage first
- then CAN resistance/wiring and module communication.