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Detroit DD13 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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