Fault code: 41808 SCANIA

Error identification:

The speed of the diaphragm pump in the main unit has been above the permitted level.

Cause:

The fault may be due to:

Air in the reductant suction pipe.

Internal fault in the main unit.

Notes:

The fault causes reductant injection to be switched off.

Action:

Renew the diaphragm pump.

Clear the fault code and switch off the voltage with the starter key.

Wait for at least 90 seconds and then turn on the power again. If the fault code recurs, check that there is no reductant leakage between the reductant tank and the main unit.

If the fault is in the main unit, the main unit must be renewed.