6921 SPN Fault Code

Name:

SCR System Cleaning Inhibited Due to PTO Active

Description:

Indicates the state of SCR system cleaning inhibition due to the PTO being active. 00b = not inhibited 01b = inhibited 10b = reserved for SAE assignment 11b = not available This SPN indicates the reason for the SCR system cleaning event not being initiated or being exited prior to completion. When this state becomes active, the system will not initiate an SCR system cleaning event or it will exit an SCR system cleaning event. The state provides information that may be provided to the driver/service technician as to why the SCR system cleaning event did not initiate or was exited.

6921 spn fault code name is SCR System Cleaning Inhibited Due to PTO Active. If you don't take the time to look into 6921 spn fault when it arises, it can add up quickly. One small issue like 6921 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 6921 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.

6921 SPN Fault Code

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