Scania fault code 8706
Code 8706 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Control unit
The NOx sensor shows low electricity (internal fault) or EMS shows a disruption in the signal has occurred.
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EMU
Water valve V194, feedback signal, short circuit to earth
The control unit indicates low voltage on the water valve's feedback signal.
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EEC Exhaust Emission Control
NOx sensor downstream of the SCR catalytic converter
NOx sensor T115 downstream of the SCR catalytic converter signals internal fault in the NOx sensor.
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