4445 SPN Fault Code

Name:

Aftertreatment 2 Outlet NH3 Reading Stable

Description:

Indicates that the NH3 reading of the aftertreatment outlet NH3 sensor is stable as determined by the manufacturer�s control software in exhaust bank 2.00b = Reading is not stable 01b = Reading is stable 10b = Error 11b = Not available

4445 spn fault code name is Aftertreatment 2 Outlet NH3 Reading Stable. If you don't take the time to look into 4445 spn fault when it arises, it can add up quickly. One small issue like 4445 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 4445 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.

4445 SPN Fault Code

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