ARD Purge Air -- Test
3480--03 SPN 3480 -- FMI 03 Aftertreatment #1 Fuel Pressure : Voltage Above Normal (J1939 Data Link)
Sensor Signal (Analog, Active) -- Test
For the purge valve, the aftertreatment shutoff valve or the aftertreatment fuel pressure sensor are usually the culprit with this fault. Well it seems like I'm always posting a doozie. In response to an increasing push for clean diesel emissions, medium and heavy duty diesel-powered trucks have adopted complex exhaust or emission aftertreatment systems. / / SPN-3490 Aftertreatment purge air actuator Pages (3):« Previous1 23Next » new reply Threaded Mode | Linear Mode SPN-3490 Aftertreatment purge air actuator 07-12-2020, (Subject: SPN-3490 Aftertreatment purge. Check engine code on Volvo D13 is showing air purge valve stuck open on aftertreatment, what can happen and how do I fix it. The ECM then sends a PWM signal to the Aftertreatment Hydrocarbon Dosing Valve that allows purge air pressure to be monitored by a signal from the Aftertreatment Fuel Pressure Sensor to the ECM.
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