3990 SPN Fault Code

Name:

Door 2 Control Module

Description:

The status of the second door control module. Doors are numbered left to right, front to back.

3990 spn fault code name is Door 2 Control Module. If you don't take the time to look into 3990 spn fault when it arises, it can add up quickly. One small issue like 3990 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 3990 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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