Here is the instruction show you guide on how to solve Doosan Stage V machine U1028 DEF quality sensor open circuit solution.
Preparations:
2025 Doosan Data Monitoring System DMS-5
2024 Doosan Diagnostic Software Full Package
1 Overview:
“E” SPNFMI E00352003
REASON
1 Electrical problem (Faulty DEF quality sensor, Wiring harness in the DEF module)
2 Electrical problem (CAN wiring harness-insulation,Resistance)
EFFECT Inducement Group5(Tampering)
The pin definition is dependent on the DEF tank type.
2 Component Location
DEF tank location and connector is dependent on machine application.
3 Condition for Running Diagnostic
Continuously checked in every sample time when there is no bus-off and no timeout error
4 Condition for Setting the Fault Code
The error is reported if its FMI is equal to 3 (Open circuit)
5 Condition for Clearing the Fault Code
The error is healed when its FMI is not equal to 3
6 Check List
