Scania fault code 4438
Code 4438 is used by 5 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Injector, cylinder 7
Permanent electrical fault in the injector solenoid valve or in the electrical cables to the injector.
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EMD
Injector, cylinder 7
Permanent electrical fault in the injector solenoid valve or in the electrical cables to the injector. The fault only occurs when the engine is running.
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EME
Injector, cylinder 7
Permanent electrical fault in the injector solenoid valve or in the electrical cables to the injector. The fault only occurs when the engine is running.
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EMO
Injection error, physical cylinder 7
Permanent electrical fault detected on the injector coil(s) or 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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