Volvo engine code DTC P0409

EGR Differential Pressure Sensor: Circuit Monitors The EGR Differential Pressure Sensor is checked for electrical failures by monitoring the analog-to-digital(A/D) input voltage. P0409 EGR Differential Pressure Sensor: Open Circuit Check DTC P0409 Component / System DP Sensor - Open Monitor Strategy Description Open Circuit Fault Limit Sensor Voltage < 0.2 V Enable Conditions • Key On Active • Battery Voltage > 8 V Disable Conditions No Active DTC's: • N/A Time Required For DTC To Be Set 5 seconds MIL Illumination 2 Drive Cycles