Scania fault code 8291
Code 8291 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Battery voltage
The SCR control unit has indicated that the battery voltage has been below the permitted level. It has been below 8.6 V.
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EMU
Cooling fan M39, feedback signal, signal fault
The control unit reports that the cooling fan has a poor signal status.
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AMS
EEC, control unit for exhaust gas aftertreatment, low voltage
The battery voltage in the EEC control unit is too low when the engine is running.
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EEC Exhaust Emission Control
EEC, Control unit for exhaust gas aftertreatment
The battery voltage in the EEC control unit is too low when the engine is running.
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