3821 SPN Fault Code

Name:

Engine Exhaust Gas Recirculation 1 Valve 2 Control

Description:

Desired percentage of maximum Exhaust Gas Recirculation (EGR) valve opening for valve 2. 0% means valve is closed. 100% means maximum valve opening (full gas flow).

3821 spn fault code name is Engine Exhaust Gas Recirculation 1 Valve 2 Control. If you don't take the time to look into 3821 spn fault when it arises, it can add up quickly. One small issue like 3821 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 3821 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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