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Volvo engine code DTC P0544
Exhaust Gas Temperature Sensors: Circuit Monitors The Exhaust Gas Temperature Sensor circuits are monitored to check for electrical failures by monitoring the analog-to-digital (A/D) input voltages. P0544 Pre-DOC Temperature Sensor: Open Circuit Check DTC P0544 Component / System Pre-DOC Temperature Sensor - Open Monitor Strategy Description Open Circuit Fault Limit Sensor Voltage > 2.3 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