3939 SPN Fault Code

Name:

Enable Switch � PTO Engine Flywheel

Description:

Status of the PTO Engine Flywheel enable switch 00b = Enable switch off � PTO operation not desired 01b = Enable switch on � PTO operation desired 10b = Error 11b = Not available

3939 spn fault code name is Enable Switch � PTO Engine Flywheel. If you don't take the time to look into 3939 spn fault when it arises, it can add up quickly. One small issue like 3939 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 3939 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.

3939 SPN Fault Code

Name:

Description:

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