7440 SPN Fault Code

Name:

Aftertreatment Active Regeneration Inhibited Due to Low Exhaust Pressure

Description:

The state of aftertreatment active regeneration inhibition due to low exhaust pressure. Aftertreatment Regeneration is a process of increasing the temperature at the exhaust and thereby removing the deposits on aftertreatment components such as DPF or SCR Catalyst and increasing their efficiency. This SPN indicates the reason for the regeneration not being initiated or being exited prior to completion. When this state becomes active the system will not initiate an active regeneration or will exit an active regeneration. The state provides information that may be provided to the driver/service technician as to why the regeneration did not initiate or was exited. 00b = Not Inhibited 01b = Inhibited 10b = Reserved for SAE assignment 11b = Not Available

7440 spn fault code name is Aftertreatment Active Regeneration Inhibited Due to Low Exhaust Pressure. If you don't take the time to look into 7440 spn fault when it arises, it can add up quickly. One small issue like 7440 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 7440 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.

7440 SPN Fault Code

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