WARNING
HOT EXHAUST
During parked regeneration the exhaust gases will be extremely HOT and could cause a
fire if directed at combustible materials. The vehicle must be parked outside.
ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well
ventilated area. Engine exhaust is toxic.
When the parked regeneration request is accepted, the Diesel Particulate Filter (DPF) Regeneration lamp will turn
ON one time for one second and then turn off for the remainder of the parked regeneration. The High Exhaust
System Temperature (HEST) lamp will flash for one second every ten seconds and eventually become solid when
the Selective Catalyst Reduction (SCR) outlet temperature is above 525°C (977°F).
The engine speed will increase to 1250 rpm for both the DD13 and DD15 and to 1275 rpm for the DD16. Engine speed could drop to as low as 1100 rpm towards the end of the regeneration depending on ambient temperature conditions. The regeneration will take approximately 30 to 45 minutes. There is no hydrocarbon fuel dosing during the first 12
minutes. The regeneration is complete when the engine returns to low idle and the DPF lamp remains OFF.
The HEST lamp will remain ON, but the vehicle may be driven.The DD13 and DD15 engines create a noise on the right side of the engine during a parked regeneration that is normal. This is caused by EGR flow during the parked regeneration creating a noise resonance. See video titled “GHG17 DD13 and DD15 Parked Regeneration Noise” at ddcsn.com > Support > Multimedia > Aftertreatment. GHG17 DD13 and DD15 Parked Regeneration Noise
The DD16 engine will not produce this noise because it still has an Intake Throttle Valve and Axial Power Turbine
design.A parked regeneration will STOP and the engine will return to low idle if any of the following happens:
• The vehicle is put into gear
• The clutch is cycled
• The parking brake is released
• The accelerator pedal is depressed
The image below shows an example of a parked regeneration log file view using the DiagnosticLink chart
selection.
The chart below is a list of parameter ranges observed during a parked regeneration using the DiagnosticLink
chart selection. These parameters are meant to be used as a guide and are not specifications. These parameters
can fluctuate outside of the ranges given below.
