Reason:Aftertreatment Diesel Exhaust Fluid Return Valve – Voltage Above Normal or Shorted to High Source. High signal voltage detected at...

Reason:Aftertreatment Diesel Exhaust Fluid Return Valve – Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at...

Reason:Aftertreatment SCR Catalyst Conversion Efficiency – Data Valid But Below Normal Operating Range – Moderately Severe Level. NOx conversion across...

Reason:Aftertreatment SCR Catalyst Conversion Efficiency – Data Valid But Below Normal Operating Range – Moderately Severe Level. NOx conversion across...

Reason:Aftertreatment Outlet NOx Sensor Heater – Abnormal Rate of Change. The aftertreatment outlet Nox sensor heater is unable to maintain...

Reason:Aftertreatment Diesel Exhaust Fluid Pressure Sensor – Data Erratic, Intermittent, or Incorrect. The diesel exhaust fluid pressure sensor has reported...