4959 SPN Fault Code

Name:

Beltlock 8 Status

Description:

State of switch used to determine if Beltlock 8 is buckled. 00b = unlocked 01b = locked 10b = Error – Beltlock state cannot be determined 11b = not available

4959 spn fault code name is Beltlock 8 Status. If you don't take the time to look into 4959 spn fault when it arises, it can add up quickly. One small issue like 4959 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 4959 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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SPNFMI Faults and Engine error code check tool. SPN code listing with names and descriptions.

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