Medium and Heavy Trucks
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The aftertreatment purge air actuator is mounted on the left side of the engine above the aftertreatment fuel shutoff manifold
Possible causes of this fault include:
CODE REASON EFFECT
Fault Code: 3224PID:SPN: 3490FMI: 3LAMP: AmberSRT:
Aftertreatment Purge Air Actuator Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the aftertreatment purge air actuator circuit.
Active aftertreatment diesel particulate filter regeneration will be disabled until the next key cycle.