DESCRIPTION:
This fault code sets when the aftertreatment control module (ACM) detects that the diesel exhaust fluid (DEF) pressure duty cycle is low.

MONITORED PARAMETER:
DEF pressure

TYPICAL ENABLING CONDITIONS:
DEF dosing enabled.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
20 minutes

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
None

VERIFICATION:
SCR quantity test.

NOTE: If codes 3361-3, 3361-4, or 3361-5 are active fix those first.

PROBABLE CAUSES:
DEF pressure sensor.