Scania fault code 4721
Code 4721 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Unit injector for cylinder 7
It has not taken as long as expected for the control unit to build up the current in the solenoid valve. The control unit uses the battery voltage and the engine temperature to cal…
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EMD
Outdoor temperature sensor T27 or charge air temperature sensor T121
The calculated charge air temperature is based on the outdoor temperature sensor value. A large positive difference between the measured and calculated charge air temperature indic…
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EME
Outdoor temperature sensor T27 or charge air temperature sensor T121
The calculated charge air temperature is based on the outdoor temperature sensor value. A large positive difference between the measured and calculated charge air temperature indic…
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EMO
Outdoor temperature sensor T27 or charge air temperature sensor T121
The calculated charge air temperature is based on the outdoor temperature sensor value. A large positive difference between the measured and calculated charge air temperature indic…
Read explanation →