DPF Zones, Cummins Engines
DPF Zone DPF Status Bar Warning Lamps Regen Mode Available
1
f61139906/10/2016
0–60% Green
— • over-the-road
3
f61140106/10/2016
60–80% Yellow
DPF flashing yellow
HEST solid yellow
*
• over-the-road
• parked
5
f61140306/10/2016
80–100% Red
DPF flashing yellow
HEST solid yellow
*
• parked
*
Illuminates if exhaust temperature is above a preset limit.
Table 13.4, DPF Zones, Cummins Engines
High Exhaust System Temperature
(HEST) Lamp
Slow (10-second) flashing of the high exhaust
system temperature (HEST) lamp indicates that a
parked regen is in progress, and the engine’s high
idle speed is being controlled by the engine software,
not the vehicle driver.
Steady illumination of the HEST lamp alerts the
driver of high exhaust temperature during the regen
process if the vehicle speed is below 5 mph (8 km/
h), or during a parked regen. See
Fig. 13.6.
Maintenance
Authorized service facilities must perform any DPF
service. For warranty purposes, maintain a record
that includes:
•
date of cleaning or replacement;
•
vehicle mileage;
Emissions
13.6
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