Vehicles

SPN 1761 FMI[1 – 18] Engine Faults Explained

SPN 1761 is a fault code indicating problem with aftertreatment 1 diesel exhaust fluid tank. See below for the details of each FMI.

FMI – Cause:

1 – Level Data Valid But Below Normal Operational Range – Most Severe Level

3 – Level Voltage Above Normal, Or Shorted To High Source

4 – Level Voltage Below Normal, Or Shorted To Low Source

5 – Level Current Below Normal Or Open Circuit

6 – Level Current Above Normal Or Grounded Circuit

10 – Level Abnormal Rate Of Change

11 – Level Root Cause Not Known

13 – Level Out Of Calibration

17 – Level Data Valid But Below Normal Operating Range – Least Severe Level

18 – Level Data Valid But Below Normal Operating Range – Moderately Severe Level