PACCAR PX-9 CM2350 (2013-17) Fault Code:3498 PID: SPN:1761 FMI:18 Aftertreatment Diesel Exhaust Fluid Tank Level – Data Valid But Below Normal Operating Range – Moderately Severe Level

Reason:
Aftertreatment Diesel Exhaust Fluid Tank Level – Data Valid But Below Normal Operating Range – Moderately Severe Level. The aftertreatment diesel exhaust fluid tank level is very low.

Effect:
None on performance

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 aftertreatment diesel exhaust fluid tank level sensor is located in the aftertreatment diesel exhaust fluid tank. Location of the tank and level sensor is OEM dependent. Refer to the OEM service manual.

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

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

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

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the diesel exhaust fluid lamp immediately after the diagnostic runs and passes.
4) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

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 Causes:
1) Inactive fault codes
2) Faulty ECM