Detroit DD15 GHG14 (2014-16) Fault Code: SPN 4334 FMI 4 (ACM) Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low
DESCRIPTION:
Diesel exhaust fluid (DEF) pressure sensor circuit voltage below normal, or shorted to low source.
MONITORED PARAMETER:
Diesel exhaust fluid (DEF) pressure sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Engine idle: One minute.
PROBABLE CAUSES:
1. DEF pressure sensor.
2. DEF pressure sensor connector/harness.
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