8442 SPN Fault Code

Name:

Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1 Command

Description:

Command (in percent) sent to the diesel exhaust fluid (DEF) injector to control the amount of DEF being injected into the aftreatment exhaust stream.0% closes the valve; 100% fully opens the valve.

8442 spn fault code name is Aftertreatment 1 Diesel Exhaust Fluid Doser Valve 1 Command. If you don't take the time to look into 8442 spn fault when it arises, it can add up quickly. One small issue like 8442 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 8442 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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