Scania fault code 40978
Code 40978 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:
CCU
Fan motor, overheating
The control unit has interpreted that the fan motor is overheated.
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ACC Automatic Climate Control
Fan motor M3
The control unit has interpreted that the fan motor is overheated.
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MCC
Fan motor M3
The control unit has interpreted that the fan motor is overheated.
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