1840 SPN Fault Code

Name:

Rear Black Out Marker Select

Description:

Rear Black Out Marker Selection 00b = Off 01b = On 10b = Reserved 11b = Not Supported

1840 spn fault code name is Rear Black Out Marker Select. If you don't take the time to look into 1840 spn fault when it arises, it can add up quickly. One small issue like 1840 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 1840 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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