687 SPN Fault Code

Name:

Disengage Differential Lock Request � Rear Axle 1

Description:

Command signal used to disengage the various differential locks, e.g., to allow an undistributed individual wheel control by ABS. The differential locks are located as defined in Figure SPN564_A.00b = Engage differential lock 01b = Disengage differential lock 10b = Reserved 11b = Take no action

687 spn fault code name is Disengage Differential Lock Request � Rear Axle 1. If you don't take the time to look into 687 spn fault when it arises, it can add up quickly. One small issue like 687 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 687 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.

687 SPN Fault Code

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