DTC C1A04-26: Right Front Height Sensor - Signal rate of change below threshold: Action

Check height sensor linkage is securely connected and not damaged. Visually inspect the height sensor for security, damage and correct orientation/installation. Check the sensor connector for damage. Repair/renew as required, clear the DTCs and retest
If the fault persists, refer to the appropriate system wiring diagram and check front right height sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair circuit as required, clear the DTCs and retest