Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4334 FMI 2 (ACM) Diesel Exhaust Fluid Metering Unit Pressure Sensor – Drift
DESCRIPTION:
Diesel exhaust fluid (DEF) pressure sensor – drift.
MONITORED PARAMETER:
Diesel exhaust fluid (DEF) pressure.
TYPICAL ENABLING CONDITIONS:
Pressure limiting unit off.
MONITOR SEQUENCE:
Five hour engine off time.
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
Five seconds
DASH LAMPS:
MIL
VERIFICATION:
SCR quantity test.
PROBABLE CAUSES:
1. DEF metering unit pressure sensor.
2. DEF metering unit pressure sensor connector/harness.
3. Flush DEF metering system.
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