C0340high severityChassis
Active Roll Control System Malfunction
on 2015 Kia Forte 1.8L I4 · FWD
What this code means
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.
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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