4339 SPN Fault Code

Name:

Aftertreatment 1 SCR Feedback Control Status

Description:

The SCR feedback control status (open/closed loop) for aftertreatment system 1 (exhaust bank 1). 000b = open loop control active 001b = closed loop control active 010b = reserved for future assignment by SAE 011b = reserved for future assignment by SAE 100b = reserved for future assignment by SAE 101b = reserved for future assignment by SAE 110b = error 111b = not available

4339 spn fault code name is Aftertreatment 1 SCR Feedback Control Status. If you don't take the time to look into 4339 spn fault when it arises, it can add up quickly. One small issue like 4339 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 4339 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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