U0447high severityNetwork
Invalid Data Received from Gateway Module
on 2019 Mazda Mazda3 2.5L I4 · FWD
What this code means
Data passing through the gateway module is invalid or being corrupted in translation.
Symptoms
- Multiple module communication errors
- Cross-system faults
- Modules on different buses not synchronizing
- Intermittent multi-system issues
Common causes
- Gateway module software corruption
- Gateway hardware failure
- CAN bus noise at gateway
- Gateway power supply issue
- Software version incompatibility
Diagnostic steps
- Check gateway module software version
- Update gateway software
- Test CAN bus quality on all gateway bus connections
- Check gateway power supply
- Inspect gateway module connections
Repair notes
Reprogram gateway module. If issue persists, replace gateway. Check all bus connections at gateway.
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