Scania fault code 4177
Code 4177 is used by 9 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Emissions of nitrogen oxides (NOx)
More than a couple of hours have passed with too low an exhaust gas temperature. This means that the calculated amount of hydrocarbons that have not been burned is too high.
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EMU
Heater H39, short circuit to earth
The control unit indicates that the heater supply signal voltage is too low.
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BMU Battery Management Unit
Cell monitoring circuit board, different part numbers
The cell monitoring circuit boards have different part numbers.
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EMD
High hydrocarbon content in the aftertreatment system
Hydrocarbon content is above critical level
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EME
High hydrocarbon content in the aftertreatment system
Hydrocarbon content is above critical level
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EMO
Excessive hydrocarbon level in aftertreatment, engine still running
The stored hydrocarbon level in the Aftertreatment is above the critical level.
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DDU
Right speaker 1, short circuit in wiring harness
Information is missing, update is in progress.
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ICL Instrument Cluster
General red alarm
Internal fault. General red alarm not working.
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GSC
High pressure solenoid valve
Incorrect level on current signal through the solenoid valve coil.
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