4778 SPN Fault Code

Name:

Aftertreatment 2 Gas Oxidation Catalyst Differential Temperature

Description:

The differential engine combustion byproducts gas temperature measured between the intake and outlet of the gas oxidation catalyst for exhaust bank 2. This parameter should be used with engine fueled by gaseous fuel like natural gas or propane. Diesel engines should not use this parameter.

4778 spn fault code name is Aftertreatment 2 Gas Oxidation Catalyst Differential Temperature. If you don't take the time to look into 4778 spn fault when it arises, it can add up quickly. One small issue like 4778 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 4778 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.

4778 SPN Fault Code

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