Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3498 PID: SPN: 1761 FMI: 18 Aftertreatment Diesel Exhaust Fluid Tank Level- Data Valid But Below Normal Operating Range- Moderately Severe Level

Circuit Description
The aftertreatment diesel exhaust fluid level sensor is used to monitor the diesel exhaust fluid level inside the diesel exhaust fluid tank.

Component Location
The diesel exhaust fluid level sensor is located in the diesel exhaust fluid tank. Location of the tank and level sensor is original equipment manufacturer (OEM) dependent.

Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position.

Conditions for Setting the Fault Codes
The diesel exhaust fluid tank level is very low.

Action Taken When the Fault Code is Active
The Diesel Exhaust Fluid Lamp will be flashing.

Conditions for Clearing the Fault Code
To validate the repair, start the engine and let it idle for 1 minute.
The fault code status displayed by INSITE? electronic service tool will change to INACTIVE immediately after the diesel exhaust fluid tank is refilled and the diagnostic runs and passes.
The ECM will turn off the diesel exhaust fluid lamp immediately after the diagnostic runs and passes.
The Reset All Faults command in INSITE? electronic service tool can be used to clear active and inactive faults.

Shop Talk
This fault code indicates that the diesel exhaust fluid level is very low. The diesel exhaust fluid tank must be refilled.

Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.

For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing or intermittent connections.

Possible Cause:
1) ECM calibration