4013 SPN Fault Code

Name:

Headlight Interrupt Switch

Description:

The headlight interrupt switch signals that the head lights are to be turned off for a limited interval of time. This switch allows drivers to extinguish DRL or other headlight features, such as when in line at a weigh station.

4013 spn fault code name is Headlight Interrupt Switch. If you don't take the time to look into 4013 spn fault when it arises, it can add up quickly. One small issue like 4013 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 4013 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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