U0214low severityNetwork
Lost Communication with Remote Start Module
on 2019 Mazda Mazda3 2.5L I4 · FWD
What this code means
Cannot communicate with the remote start control module.
Symptoms
- Remote start not functioning
- Remote start LED not indicating
- Engine does not crank from remote
- Remote start warning message
Common causes
- Remote start module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Hood switch open
- Security system conflict
Diagnostic steps
- Check remote start module fuse
- Test power and ground
- Check CAN wiring
- Verify hood switch closed
- Check for security system DTCs
- Test remote start trigger signal
Repair notes
Check fuses and hood switch (must show closed for remote start). Verify no security DTCs present.
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