Detroit DD13 EPA10 (2010-13) Fault Code: SPN 3361 FMI 7 (ACM) Diesel Exhaust Fluid Metering Unit – Unable to Clear Restriction
DESCRIPTION:
Diesel exhaust fluid (DEF) unit – unable to clear restriction.
MONITORED PARAMETER:
1. DEF pressure.
2. DEF air pressure.
TYPICAL ENABLING CONDITIONS:
Dosing enabled
MONITOR SEQUENCE:
SPN 4335/14 and 31 active.
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Selective catalyst reduction (SCR) quantity test.
PROBABLE CAUSES:
1. Failed DEF pressure sensor.
2. DEF metering unit air inlet restricted.
3. Flush the DEF system.
4. Failed diffuser heater.
5. Failed DEF nozzle.
6. Failed supply hose for DEF.
![JOHN DEERE PARTS ADVISOR & HITACHI 2.24.2 [2023.07] - ECUFORCETRUCK EPC](https://i0.wp.com/www.ecuforcetruck.com/wp-content/uploads/2023/09/1.png?resize=300%2C300&ssl=1)
![JOHN DEERE PARTS ADVISOR & HITACHI 2.24.2 [2023.07] - ECUFORCETRUCK EPC](https://www.ecuforcetruck.com/wp-content/uploads/2023/09/2.png)
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