Detroit Diesel
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3216 FMI 4 (ACM) Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Low
Posted by PerDiezel Solutions on
DESCRIPTION:This code sets when there is a short to ground on the SCR NOx inlet circuit between the sensor and the CPU. MONITORED PARAMETER:SCR inlet NOx sensor. TYPICAL ENABLING CONDITIONS:Dewpoint enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:None VERIFICATION:Parked regen NOTE: If occurrence counter 5 or less, clear codes and return vehicle to customer. PROBABLE CAUSES:SCR inlet NOx sensor.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3223 FMI 7 (ACM) NOx RAW Sensor Not Ready After Dewpoint Enable Check
Posted by PerDiezel Solutions on
DESCRIPTION:NOx inlet sensor failure to active. MONITORED PARAMETER:NOx inlet sensor. TYPICAL ENABLING CONDITIONS:NOx raw count. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Always on DASH LAMPS:MIL ENGINE REACTION:None VERIFICATION:Once engine is at standard operating temperature, drive at highway speed with loaded trailer above 1130 rpm continuously for twenty minutes. NOTE: If codes 5357-16 or 5357-18 present, fix those first. PROBABLE CAUSES:1. Perform a stationary regen.2. SCR inlet NOx sensor.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3226 FMI 13 (ACM) Selective Catalyst Reduction Outlet NOx Sensor Signal Not Available
Posted by PerDiezel Solutions on
DESCRIPTION:Selective catalyst reduction (SCR) outlet NOx sensor signal not available. MONITORED PARAMETER:SCR outlet NOx sensor signal. TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:Two seconds DASH LAMPS:MIL VERIFICATION:Engine Idle: One minute. NOTE: If fault occurred during high idle regeneration, clear fault and release vehicle. NOTE: If occurrence counter 5 or less, clear codes and return vehicle to customer. PROBABLE CAUSES:1. SCR outlet NOx sensor.2. SCR outlet NOx sensor connector/harness.3. ACM2 (engine computer) failure.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3226 FMI 2 (ACM) Selective Catalyst Reduction Outlet NOx Sensor – Drift
Posted by PerDiezel Solutions on
DESCRIPTION:Outlet NOx sensor is drifted. MONITORED PARAMETER:1. Selective catalyst reduction (SCR) outlet NOx.2. Engine speed between 1000 to 2000 rpm.3. Engine load between 25 to 100%. TYPICAL ENABLING CONDITIONS:1. SCR temperature greater than 390°C (734°F) for 10 seconds.2. Inlet NOx to outlet NOx deviation greater than 200 ppm. MONITOR SEQUENCE:Once per drive cycle. EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:20 seconds DASH LAMPS:None ENGINE REACTION:Dosing is disabled VERIFICATION:Parked regeneration NOTE: If any other EGR codes are active, fix those first. PROBABLE CAUSES:1. Check the aftertreatment system for leaks/damage.2. Perform a high idle regeneration with the metering valve or dosing...
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3226 FMI 20 (ACM) Selective Catalyst Reduction Outlet NOx Sensor – Drift Low
Posted by PerDiezel Solutions on
DESCRIPTION:Selective catalyst reduction (SCR) outlet NOx sensor – drift low. MONITORED PARAMETER:Engine out NOx. TYPICAL ENABLING CONDITIONS:The following must be true for greater than 30 seconds:1. Fuel mass is 0.2. Diesel particulate filter (DPF) outlet temperature greater than 200 °C (392°F).3. Battery voltage greater than 10V DC.4. Engine Speed 500 to 2100 rpm. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:Five seconds DASH LAMPS:MIL ENGINE REACTION:None VERIFICATION:Parked regeneration
