U0064high severityNetwork
Lost Communication with Diagnostic Gateway Module
on 2016 Chevrolet Impala 3.6L V6 LFX · AWD
What this code means
Cannot communicate with the diagnostic gateway that routes scan tool communication to vehicle buses.
Symptoms
- Scan tool cannot connect
- OBD port no communication
- Cannot read any DTCs
- Cannot perform diagnostics
Common causes
- Gateway module power failure
- Gateway module failure
- CAN bus issue to gateway
- OBD port wiring damage
- Fuse blown
Diagnostic steps
- Check gateway module fuse
- Test power and ground at gateway
- Check OBD port pin connections
- Test CAN wiring from OBD port to gateway
- Verify gateway module operation
Repair notes
Check OBD port wiring and gateway module power supply. Common on VW/Audi 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