Operation
Diesel engine
6.7.3.2 Power reduction AdBlue® quality/system error
(applicable for c-diesel engine and d-diesel engine)
Error System impact Capacity
By detection of poor
quality/system error
DEF control light is on after 60 min for 60
min.
Normal
60 min. after detection DEF warning light flashes
LIM warning light is on
Torque reduction to 75% of the nomi-
nal torque
Slight reduction
180 min. after detection DEF warning light flashes
LIM warning light flashes
Torque reduction to 50% of the nomi-
nal torque
Rotational speed limited to 60% of
nominal rotational speed
Strong reduc-
tion
230 min. after detection DEF warning light flashes
LIM warning light flashes
Stop engine warning light is on
Reduction to 20% of the nominal
torque
Reduction to the idling speed
Full reduction
begins
240 min. after detection DEF warning light flashes
LIM warning light flashes
Stop engine warning light flashes
Diesel engine in idling speed
Full reduction
For all malfunctions in the SCR system, the system effects should be equated to those
of poor AdBlue® quality. Additionally, in the event of system error the warning light
"CHECK engine" is on permanently.
DEF control light (Diesel Exhaust Fluid), AdBlue® warning.
LIM control light, diesel engine torque limiter is active.
CHECK engine warning light (AWL warning), check diesel engine.
STOP engine warning light, shut down diesel engine (performance
reduced).
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