EGR Duty Cycle

RANGE (0-100 PERCENT):
The EGR duty cycle determines the percentage of time the EGR valves control circuit has 12 volts applied to it. This is a method to control the current applied to the valve motor. As duty cycle increases, so does current which forces the valve to open further and allow more exhaust gas to enter the intake. One hundred percent duty cycle would indicate a fully opened valve.