Starting and running
OPM 300 en-GB 27
© Scania CV AB 2020, Sweden
Emission control
The system provides a warning if there are faults
on the SCR system or if the level of reductant in
the reductant tank is too low. In the case of some
faults, for example if doser cooling is not work-
ing, the torque is reduced.
Reaction at low reductant level
The engine resumes normal torque after reduct-
ant has been filled to a level of at least 20%.
Reductant
level
Warning
lamp
Torque reduction
1
1. Applies only to engines certified according to Tier 4.
20% Constant
light
10% Flashing Torque is reduced by
1% per minute to
70 % of the highest
torque.
0% Flashing rap-
idly
Torque is reduced to
0% (low idling)
within 2-10 minutes.
Symbol for low reductant level.
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