2872 SPN Fault Code

Name:

Main Light Switch

Description:

A 4 bit parameter to indicate the selected position of the operator’s main light switch. 0000b = Off – The position by which the operator selects that none of the lamps are to be on. 0001b = Park On – The position by which the operator selects that the park lamps are to be on. 0010b = Headlight On – The position by which the operator selects that the headlamps are to be on. 0011b = Headlight and Park On – The position by which the operator selects that Both the Headlamps and the Park lamps are to be on. 0100b = Automatic Lights – The position by which the operator selects that the Headlamps and Park Lamps turn on and off due to outside ambient light conditions 0101b = Reserved 0110b = Reserved 0111b = Reserved 1000b = Delayed Off – The position by which the operator selects that a certain set of lamps are to come On and then are to be turned Off following a delay time (Operators Desired – Delayed Lamp Off Time). 1001b = Reserved 1010b = Reserved 1011b = Reserved 1100b = Reserved 1101b

2872 spn fault code name is Main Light Switch. If you don't take the time to look into 2872 spn fault when it arises, it can add up quickly. One small issue like 2872 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 2872 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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