C0340
Active Roll Control System Malfunction
2016-2021 Mazda CX-3 2.0L I4 🇬🇧
High SeverityChassis
Description
General fault in the active roll stabilization system that reduces body roll during cornering.
Symptoms
- Active roll control warning light
- Increased body roll in corners
- Stabilizer bar clunking noise
- Handling reduced
Common Causes
- Active stabilizer bar motor failure
- Hydraulic valve fault
- Control module malfunction
- Stabilizer bar link failure
Diagnostic Steps
- Scan for specific sub-codes
- Test active stabilizer motor or hydraulic valve
- Inspect stabilizer bar links
- Check module power supply
- Monitor system pressure if hydraulic
Repair Notes
Diagnose specific active roll control component. System may be hydraulic or electromechanical.
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
C0340 on Other Vehicles
Common Questions
What does code C0340 mean on a 2016-2021 Mazda CX-3?
C0340 stands for "Active Roll Control System Malfunction". General fault in the active roll stabilization system that reduces body roll during cornering.
What are the symptoms of C0340 on a Mazda CX-3?
Common symptoms of C0340 include: Active roll control warning light, Increased body roll in corners, Stabilizer bar clunking noise, Handling reduced.
What causes C0340 on a 2016-2021 Mazda CX-3?
Common causes of C0340 include: Active stabilizer bar motor failure, Hydraulic valve fault, Control module malfunction, Stabilizer bar link failure.