Scania fault code 8723
Code 8723 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
SCR - NOx sensor before catalytic converter
The SCR control unit has received a message from the NOx sensor that there is an open circuit.
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EMU
Water valve V245, supply signal, short circuit to supply voltage
The control unit states an implausibly high voltage, which indicates an open circuit.
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EEC Exhaust Emission Control
NOx sensor upstream of the SCR catalytic converter
NOx sensor T131 upstream of the SCR catalytic converter signals internal fault in the NOx sensor.
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