5401 SPN Fault Code

Name:

Engine Turbocharger Turbine Bypass Actuator

Description:

Diagnostic SPN for the actuator controlling the engine turbocharger turbine bypass valve. In a single turbocharger configuration, « bypass » and « wastegate » refer to the same function and SPN 5421 should be used. In a configuration where there is more than one turbocharger, it is possible to bypass the first turbocharger without functioning as a wastegate, and SPN 5401 would refer to the bypass valve.

5401 spn fault code name is Engine Turbocharger Turbine Bypass Actuator. If you don't take the time to look into 5401 spn fault when it arises, it can add up quickly. One small issue like 5401 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 5401 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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