4773 SPN Fault Code


Aftertreatment 2 Diesel Oxidation Catalyst Differential Pressure


Exhaust differential pressure measured between the intake and exhaust of a diesel oxidation catalyst in exhaust bank 2. This parameter should be used with engines fueled by diesel fuel (not gaseous fuel like natural gas or propane). A separate parameter has been defined for gas fueled engines.

4773 spn fault code name is Aftertreatment 2 Diesel Oxidation Catalyst Differential Pressure. If you don't take the time to look into 4773 spn fault when it arises, it can add up quickly. One small issue like 4773 can cause a larger component to become damaged without taking the time to investigate. If you suspect your truck is suffering from one of these issues, look into replacing those small components to save money down the road.

Note: The name and description of 4773 code represents text descriptions for faults supported by another coding system and does not necessarily comply with SAE J1939. For a specific engine manufacturer's explanation for codes, please consult the engine's technical manual. See also other spn codes.

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