U0315critical severityNetwork
Software Incompatibility with SRS Module
on 2004 Subaru Legacy 2.5L H4 · AWD
What this code means
Software version conflict with the supplemental restraint system module.
Symptoms
- Airbag warning light on
- SRS system potentially non-functional
- Restraint system warning message
Common causes
- SRS module software outdated
- Programming error
- Version mismatch after SRS module replacement
Diagnostic steps
- Check SRS module software version
- Verify correct calibration for vehicle
- Reprogram SRS module
- Check for TSBs related to SRS software
Repair notes
Safety critical. Reprogram SRS module with correct software immediately. Do not delay repair.
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