Scania fault code 4225
Code 4225 is used by 5 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Charge air pressure sensor T122
Implausible signal from charge air pressure sensor compared to charge air pressure sensor T166.
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EMU
BCI control unit E111, communication error
The message serial number does not match.
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BMU Battery Management Unit
Cell monitoring circuit board, internal fault
Chip for cell balancing in a cell monitoring circuit board reports faults.
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DDU
A2B connection, mute signal missing
Information is missing, update is in progress.
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GSC
High pressure solenoid valve
Incorrect level on current signal through the solenoid valve coil.
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