U0426moderate severityNetwork
Invalid Data Received from Steering Angle Sensor
on 2003 Mazda MX-5 Miata 1.8L I4 · RWD
What this code means
Data from the steering angle sensor is invalid or out of expected range.
Symptoms
- Stability control disabled
- Power steering warning
- ESC light on
- Steering angle not centered
Common causes
- Steering angle sensor calibration lost
- Sensor failure
- CAN bus noise
- Clock spring issue
- Sensor wiring fault
Diagnostic steps
- Check steering angle sensor reading
- Perform steering angle calibration
- Test sensor output through full lock-to-lock
- Check clock spring
- Inspect sensor wiring
Repair notes
Perform steering angle sensor calibration. Common after alignment, battery disconnect, or steering 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