Scania fault code 8390
Code 8390 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
AMS
Electrically heated reductant hose H25, electric fault
The control unit for the exhaust gas aftertreatment management system indicates an electrical fault on the pins for the electrically heated reductant hose.
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EEC Exhaust Emission Control
Reductant circuit
Fault in the reductant heater for reductant hose 1 (H25).
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