P2002 isn't listed code, are you sure about this?
The trouble code "P2002 diesel particulate filter efficiency below threshold" relates to an emissions control device. Installed on 2007 and later diesels, it eliminates the soot emitted from their exhaust.
The causes for this DTC may include: Too much slow speed operation will cause this code. It takes heat in the 500c to 600c range to burn off the soot in the DPF. Even with the ECUs efforts in engine management, it has difficulty in creating enough heat to clear the DPF at slow engine speeds An air leak forward of the DPF will change the sensor readings resulting in the code Defective ECU strategies or components will prevent proper regeneration Fuel with a large percentage of sulfur will clog the DPF quickly Some aftermarket accessories and performance modifications Dirty air cleaner element Damaged DPF.
Have a nissan atlas 2008. Diagnosis error on autoboss 2014 is DTC p2002 PM OVER ACCMLT
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