C0316moderate severityChassis
Air Suspension Inlet Solenoid Circuit
on 1993-2001 Subaru Impreza 2.2L H4 · AWD
What this code means
Malfunction in the air suspension inlet solenoid valve that allows air into the air springs.
Symptoms
- Vehicle stuck at low height
- Cannot raise suspension
- Compressor runs but vehicle stays low
- Suspension warning light
Common causes
- Inlet solenoid failure
- Wiring fault
- Valve block internal failure
- Solenoid stuck closed
Diagnostic steps
- Test solenoid resistance
- Command solenoid operation with scan tool
- Check wiring
- Verify compressor is building pressure
- Inspect valve block for internal leaks
Repair notes
Replace inlet solenoid or valve block assembly.
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