6403 SPN Fault Code

Name:

Engine Cylinder 2 Pressure Sensor Preliminary FMI

Description:

Used to identify the applicable J1939-73 FMI detected in the engine cylinder 2 pressure sensor. In the case of multiple failures the most severe is communicated.A value of 31 is sent to indicate that no failure has been detected or this parameter is not supported.

6403 spn fault code name is Engine Cylinder 2 Pressure Sensor Preliminary FMI. If you don't take the time to look into 6403 spn fault when it arises, it can add up quickly. One small issue like 6403 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 6403 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.

6403 SPN Fault Code

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