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Old 05-01-2009, 09:12 PM
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Join Date: Sep 2007
Location: South Central Kansas
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Default Cummins 6.7L P1451 and P242F Diesel Paticulant Filter Codes

P1451-DIESEL PARTICULATE FILTER SYSTEM PERFORMANCE

The engine Exhaust system monitors the soot load in the Aftertreatment diesel particulate filter. Under normal operating conditions the Aftertreatment diesel particulate filter is self-cleaning, where accumulated soot is converted to ash. Under light load operating conditions, the driver may be notified via the vehicle's EVIC message center ("CATALYST FULL: SEE OWNERS MAN" message will be displayed) that it is necessary to modify the vehicles driving routine/duty-cycle (see Owner's Manual for details) in order to allow the Aftertreatment diesel particulate filter system to self clean. If the vehicle's EVIC message center notification is ignored, the vehicle will eventually derate the engine and set a fault, requiring service. The soot load in the Aftertreatment diesel particulate filter is estimated by the ECM using the Exhaust Pressure Sensor values and the calculated soot output of the engine. This fault code will be triggered if the application is not operating at a duty cycle high enough to allow active regeneration of the Aftertreatment diesel particulate filter. This fault code is an indication that the exhaust temperatures exiting the turbocharger are not high enough to allow active regeneration of the soot that is trapped in the Aftertreatment diesel particulate filter. It may be necessary to increase the duty cycle of the application in order to prevent excessive soot accumulation and plugging of the Aftertreatment diesel particulate filter. The ECM will set this fault if it detects that the soot level has exceeded the normal desoot trigger threshold by a sufficient amount to indicate that the driver intervention is required. There is not a MIL lamp associated with this fault code, though the driver will be notified via the EVIC message.
  • When Monitored: Engine Running
  • Set Condition: The ECM will set this fault if it detects that the soot level has exceeded the normal desoot trigger threshold by a sufficient amount to indicate that the driver intervention is required.
Possible Causes
ENGINE HAS BEEN OPERATING IN LIGHT LOAD CONDITIONS THAT PREVENT EXHAUST TEMPERATURES FROM BEING HIGH ENOUGH TO ACTIVELY REGENERATE THE AFTERTREATMENT PARTICULATE FILTER
PROGRESSIVE DAMAGE TO THE AFTERTREATMENT SYSTEM FROM AN ENGINE FAILURE, INCLUDING BUT NOT LIMITED TO EXCESSIVE FUEL, OIL OR COOLANT IN THE AFTERTREATMENT SYSTEM
EXHAUST LEAK PREVENTING DIESEL PARTICULATE FILTER REGENERATION TEMPERATURES FROM BEING ACHIEVED


P242F-DIESEL PARTICULATE FILTER RESTRICTION - ASH ACCUMULATION

The engine aftertreatment system monitors the soot load in the aftertreatment diesel particulate filter. Under normal operating conditions, the aftertreatment diesel particulate filter is self-cleaning, where soot is converted to ash. Under light load operating conditions, the driver may be notified via the vehicle's EVIC message center that it may be necessary to modify the vehicles driving routine in order to allow the aftertreatment diesel particulate filter system to self clean. If the vehicle's EVIC message center notification is ignored, the vehicle will eventually derate the engine and set a DTC and MIL lamp, requiring service. The soot load in the aftertreatment diesel particulate filter is estimated using the Exhaust Pressure sensor and the calculated soot output of the engine. This fault code can be triggered if the application is not operating at a duty cycle high enough to actively regenerate the aftertreatment diesel particulate filter. This fault code indicates that the exhaust temperatures exiting the turbocharger are not high enough to actively regenerate the soot that is trapped in the aftertreatment diesel particulate filter. It may be necessary to increase the duty cycle of the application in order to prevent plugging of the aftertreatment diesel particulate filter. This fault will be triggered if the electronic control module (ECM) detects that the soot load of the aftertreatment diesel particulate filter has surpassed the most severe level threshold. The aftertreatment diesel particulate filter needs to be replaced, do not regenerate this filter. The ECM will illuminate the MIL lamp immediately when the diagnostic runs and fails. The driver will be notified via the vehicle's EVIC Message Center (CATALYST FULL: SERVICE REQD). The ECM will also initiate a derate of engine power output in an effort to protect the vehicle aftertreatment system. The ECM will turn off the MIL lamp immediately after the soot load in the aftertreatment diesel particulate filter has dropped below the severe level threshold (this should be accomplished through replacing the aftertreatment diesel particulate filter) and the DTC has been cleared.
  • When Monitored: The diagnostic runs continuously when the engine is running.
  • Set Condition: The ECM detects that the soot load of the aftertreatment diesel particulate filter has surpassed the most severe level threshold. The aftertreatment diesel particulate filter requires replacement.
Possible Causes
PROGRESSIVE DAMAGE TO THE AFTERTREATMENT SYSTEM FROM AN ENGINE FAILURE, INCLUDING BUT NOT LIMITED TO EXCESSIVE FUEL, OIL OR COOLANT IN THE AFTERTREATMENT SYSTEM MAY CONTRIBUTE TO A HIGH PRESSURE RELATED FAULT.
AFTERTREATMENT DIESEL PARTICULATE FILTER COULD BE PLUGGED WITH ACCUMULATED ASH.
OPERATING IN LIGHT LOAD CONDITIONS THAT PREVENT EXHAUST TEMPERATURES FROM BEING HIGH ENOUGH TO ACTIVELY REGENERATE THE AFTERTREATMENT PARTICULATE FILTER.
TEMPERATURE SENSOR(S) FAILED IN-RANGE LOW
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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10
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Old 08-24-2014, 08:20 PM
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Join Date: Jul 2014
Posts: 3
Default Catalyst full message

Ok... I have a serious question. I have a 2007 ram 2500 6.7l. driving from Indiana to Washington State with a trailer and truck full. Got to South Dakota and got an MIL and evac warning saying catalyst is full. Truck is blowing smoke and running rough. What can I do to get it running right???
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Old 08-29-2014, 05:46 PM
08RAM2500's Avatar
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Join Date: Nov 2012
Location: Wisconsin
Posts: 170

Default

Do the deletes unplug egr then send all those useless emissions crap back to the epa
and if your still stuck out there put the truck in 3rd and keep the rpms up for a long while hopefully will burn out the exhaust enough to make it home, then delete that crap
can you tell i hate emissions?
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2008 Ram 2500 6.7, 68RFE, 3.55 Rear, dpf/egr delete, H&S Tuner 175 tune W/Overdrive, AFE 4" exhaust, Quadzilla Scout II Monitor, s366, steed speed manifold
2002 Ram 1500 5.9L GAS

EPA (Economy Poisoning Agency)
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