Scania fault code 8321

Code 8321 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMU Water valve V247, short circuit to voltage supply The control unit indicates too high a voltage. Read explanation → MBS Rear view mirror heating, left-hand side, open circuit A fault has been detected on the rear view mirror heating, left-hand side, during self-diagnosis when the outputs were inactive. Read explanation → EEC Exhaust Emission Control Exhaust gas temperature sensor upstream of oxidation catalytic converter The EEC control unit for exhaust gas aftertreatment has lost contact with the exhaust gas temperature sensor upstream of the oxidation catalytic converter. Read explanation →