Scania fault code 4444
Code 4444 is used by 5 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Cylinder group A
The engine control unit indicates a short circuit to voltage supply. Injector bank A Engine type Injectors 5-cylinder 2 and 3 6-cylinder 2 and 5 8-cylinder 5 and 3
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EMD
Cylinder group A
Permanent electrical fault in one or more of the injector solenoid valves or in the electrical cables to the injectors. The fault only occurs when the engine is running. Cylinder g…
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EME
Cylinder group A
Permanent electrical fault in one or more of the injector solenoid valves or in the electrical cables to the injectors. The fault only occurs when the engine is running. Engine typ…
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EMO
Group A - Open Load And/Or Short Circuit Battery
Permanent open load and/or short circuit to battery detected on the cabling to the injector(s). The fault is detected only when engine is running.
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AMS
Communication error, EEC, exhaust gas aftertreatment control unit
The EEC control unit has lost contact with the EMS engine control unit.
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