U0428low severityNetwork
Invalid Data Received from TPMS Module
on 2004 Subaru Legacy 3.0L H6 · AWD
What this code means
Data from the Tire Pressure Monitoring System is invalid or inconsistent.
Symptoms
- TPMS warning light
- Incorrect tire pressure readings
- TPMS malfunction indicator
- Pressures shown as dashes
Common causes
- TPMS sensor battery dead
- Sensor ID mismatch
- CAN bus noise
- TPMS module calibration lost
- Aftermarket wheels blocking signal
Diagnostic steps
- Check TPMS sensor signals with tool
- Relearn TPMS sensor IDs
- Check CAN bus quality
- Verify correct sensors for vehicle
- Check for wheel well interference
Repair notes
Relearn TPMS sensor IDs. Replace sensors with dead batteries.
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