C0315
Air Suspension Exhaust Solenoid Circuit
2016-2021 Mazda CX-3 2.0L I4 🇬🇧
Moderate SeverityChassis
Description
Malfunction in the air suspension exhaust valve solenoid that releases air to lower the vehicle.
Symptoms
- Vehicle stuck at raised height
- Cannot lower suspension
- Suspension warning light
- Ride height will not adjust down
Common Causes
- Exhaust solenoid failure
- Solenoid wiring open or short
- Valve mechanically stuck
- Control module driver fault
Diagnostic Steps
- Test solenoid resistance
- Command solenoid with scan tool
- Check wiring for open or short circuits
- Inspect solenoid valve for debris
- Listen for solenoid click when commanded
Repair Notes
Replace exhaust solenoid valve or air suspension valve block.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0025LF Wheel Speed Sensor Circuit Intermittent
C0315 on Other Vehicles
Common Questions
What does code C0315 mean on a 2016-2021 Mazda CX-3?
C0315 stands for "Air Suspension Exhaust Solenoid Circuit". Malfunction in the air suspension exhaust valve solenoid that releases air to lower the vehicle.
What are the symptoms of C0315 on a Mazda CX-3?
Common symptoms of C0315 include: Vehicle stuck at raised height, Cannot lower suspension, Suspension warning light, Ride height will not adjust down.
What causes C0315 on a 2016-2021 Mazda CX-3?
Common causes of C0315 include: Exhaust solenoid failure, Solenoid wiring open or short, Valve mechanically stuck, Control module driver fault.