C0310high severityChassis
Air Suspension Compressor Circuit
on 2004 Subaru Legacy 3.0L H6 · AWD
What this code means
Malfunction in the air suspension compressor motor circuit.
Symptoms
- Suspension warning light
- Vehicle sitting low
- Compressor not running
- Ride height not adjusting
Common causes
- Compressor motor failure
- Compressor relay fault
- Wiring damage
- Compressor thermal cutout tripped
- Blown fuse
Diagnostic steps
- Check compressor relay and fuse
- Test compressor motor by applying direct power
- Listen for compressor operation
- Check for compressor overheating
- Inspect wiring and connector
Repair notes
Allow compressor to cool if overheated. Replace compressor if motor has failed. Check fuse and relay.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic