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47711155 06-2021 © AB VOLVO PENTA
Quality shortcomings and
component defects
If the system signals a quality shortcoming or
component defect, check the following:
•
that the QLT (Quality-Level-Temperaturesensor) in
®
the AdBlue
/DEF tank is connected.
•
that system hoses and the injection valve are not
clogged or disconnected.
•
that the injection valve is connected.
•
®
that the AdBlue
/DEF pump is connected.
•
that the SCR system electrical cables are
connected.
•
that the NO
sensors are connected.
x
•
that the exhaust temperature sensor is connected.
•
that the temperature sensors for the AdBlue
is connected.
•
that there are no leaks in the exhaust system where
substantial amount of solution can escape.
•
that the EGR valve is not stuck.
If the fault can not be remedied with any of the above,
refer to Fault handling, page 47.
Fault handling
®
/DEF
47
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