7321 SPN Fault Code

Name:

Aftertreatment 1 Particulate Sensor Heater High Side Driver Preliminary FMI

Description:

Used to identify the applicable J1939-73 FMI detected in the aftertreatment particulate sensor heater high side driver by the manufacturer’s sensor control software in exhaust bank 1. 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. This parameter is only valid if Aftertreatment 1 Particulate Sensor Heater High Side Driver Diagnostic Status (SPN 7322) is equal to 000b, 010b or 011b.

7321 spn fault code name is Aftertreatment 1 Particulate Sensor Heater High Side Driver Preliminary FMI. If you don't take the time to look into 7321 spn fault when it arises, it can add up quickly. One small issue like 7321 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 7321 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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