7942 SPN Fault Code

Name:

Railroad Mode

Description:

Signal which indicates the current state of the Railroad Mode / Function. 00b = Inactive (Driving mode: Steer Axle on ground) 01b = Active (Railroad mode: Steer Axle lifted off ground) 10b = Error 11b = Not available Note: This status signal may be used to indicate which mode the ECU (e.g., ASR/ABS) is operating (railroad mode vs. a normal driving mode). Railroad mode is when a vehicle (i.e. vocational truck) has deployed the railroad gear such that the vehicle can be driven on a railroad track.

7942 spn fault code name is Railroad Mode. If you don't take the time to look into 7942 spn fault when it arises, it can add up quickly. One small issue like 7942 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 7942 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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