U0235moderate severityNetwork
Lost Communication with Cruise Control Front Distance Range Sensor
on 2021 Mazda Mazda3 2.5L I4 · FWD
What this code means
Cannot communicate with the forward distance radar or lidar sensor for adaptive cruise.
Symptoms
- Adaptive cruise not available
- Sensor blocked warning
- Forward collision warning off
- Following distance not adjustable
Common causes
- Distance sensor failure
- CAN bus wiring
- Module power loss
- Sensor blocked or misaligned
- Fuse blown
Diagnostic steps
- Check sensor fuse
- Test power and ground
- Check CAN wiring
- Clean sensor face
- Check sensor alignment
- Inspect front bumper area for damage
Repair notes
Clean sensor and check alignment. Requires calibration after bumper or sensor work.
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