Readiness Monitors
Diesel Powered Vehicle Monitor Clarification Details
If your diesel powered vehicle was unready at the time of inspection, the chart below can be used to identify the monitors reported.

It has come to our attention that the monitors indicated by the standards previously published by SAE have been modified for diesel powered vehicles.  J1979DA_201110 can be purchased from SAE for complete details by following this link:

The information provided here is for informational purposes only. Please seek qualified personnel for complete diagnostic and/or repair services if needed.

Diesel Monitor Clarification Table
Monitor as indicated on VIR Diesel Monitor
Catalyst Monitor NMHC* Catalyst Monitor
Heated Catalyst Monitor NOx/SCR** After treatment Monitor
Evap System Monitor N/A
Air System Monitor Boost Pressure Monitor
Oxygen Sensor Monitor Exhaust Gas Monitor
Heated Oxygen Sensor Monitor Particulate Matter Filter Monitor

          * Non-Methane HydroCarbons (NMHC)
        ** Selective Catalytic Reduction (SCR)

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