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Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4335 FMI 2 (ACM) Diesel Exhaust Fluid Air Pressure Sensor – Drift

DESCRIPTION:Diesel exhaust fluid (DEF) air pressure sensor – drift.

MONITORED PARAMETER:Diesel exhaust fluid (DEF) air pressure.

TYPICAL ENABLING CONDITIONS:1. Diesel exhaust fluid (DEF) dosing not active.2. Diesel exhaust fluid (DEF) temperature greater than 0°C (32°F).

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:Once per drive cycle.

TYPICAL DURATION:Five seconds

DASH LAMPS:MIL

VERIFICATION:SCR quantity test.

PROBABLE CAUSES:1. DEF metering unit air pressure sensor.2. DEF metering unit air pressure sensor connector/harness.3. DEF metering unit.

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Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4334 FMI 2 (ACM) Diesel Exhaust Fluid Metering Unit Pressure Sensor – Drift