Detroit Diesel

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. Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4335 FMI 1 (ACM) Diesel Exhaust Fluid Air Pressure Not Detected (from Vehicle Supply) Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4334 FMI 17 (ACM)...

DESCRIPTION:This code sets when the aftertreatment control module (ACM) detects a short to voltage on the diesel exhaust fluid (DEF) metering unit air pressure sensor circuit. MONITORED PARAMETER:Diesel exhaust fluid (DEF) metering unit air pressure sensor. TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 25% VERIFICATION:Engine idle: One minute. PROBABLE CAUSES:1. If 4335-3, 4334-3, and 3510-3 are present, repair the short to voltage between pin 3 of the DEF metering unit air pressure sensor and pin 99 of the ACM2.2. If 4335-3 and 4334-3 and present, repair the open wire...

NOTE: This information indicates that the Aftertreatment Control Module (ACM) will initiate a Diesel Exhaust Fluid (DEF) metering unit flush procedure. NOTE: This is a silent code indicating the DEF metering unit will perform a flush procedure. NOTE: If 3361-7 is also active, repair 3361-7 first. If only code 4335-14 present, no need to do anything. Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4335 FMI 14 (ACM) Silent Fault (No Dash Lamps Illuminated) Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4335 FMI 7 (ACM) DEF Metering Unit Air Pressure – Low Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4335 FMI...

DESCRIPTION:This code sets when the aftertreatment control module (ACM) detects a short to ground or an open wire on the diesel exhaust fluid (DEF) metering unit air pressure sensor circuit. MONITORED PARAMETER:Diesel exhaust fluid (DEF) metering unit air pressure sensor. TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 25% VERIFICATION:Engine idle: One minute. PROBABLE CAUSES:1. If 4335-3, 4334-3, and 3510-3 are present, repair the short to voltage between pin 3 of the DEF metering unit air pressure sensor and pin 84 of the ACM2.2. If 4335-3 and 4334-3 and present,...

DESCRIPTION:Diesel exhaust fluid (DEF) metering unit air pressure low. MONITORED PARAMETER:Diesel exhaust fluid (DEF) metering unit air pressure. TYPICAL ENABLING CONDITIONS:1. Engine rpm greater than 500.2. Dosing enabled. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Six seconds DASH LAMPS:MIL ENGINE REACTION:Derate 25% VERIFICATION:SCR air pressure test (test duration is 60 seconds). PROBABLE CAUSES:1. Vehicle not reaching 100 PSI.2. DEF metering unit air pressure sensor.3. Pressure limiting valve.4. Flush DEF system. Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4335 FMI 4 (ACM) Diesel Exhaust Fluid Metering Unit Air Pressure Sensor Circuit Failed Low Detroit DD13 EPA10 (2010-13) Fault Code:...