U0123moderate severityNetwork
Lost Communication with Yaw Rate Sensor Module
on 2020 Mazda Mazda3 2.5L I4 · FWD
What this code means
Cannot communicate specifically with the yaw rate sensor that measures vehicle rotation.
Symptoms
- Stability control disabled
- ESC warning light
- Yaw rate data unavailable
- Traction control off
Common causes
- Yaw rate sensor failure
- Wiring damage
- Module power loss
- CAN bus issue
- Sensor mounting loose
Diagnostic steps
- Check sensor fuse
- Test sensor power and ground
- Check CAN bus wiring
- Inspect sensor mounting
- Test sensor output
Repair notes
Yaw rate sensor typically mounted centrally in vehicle. Check mounting and wiring.
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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