Fault code: 50693 SCANIA

Error identification:

The control unit has detected that the solenoid valve in the unit injector has closed too early. Start of injection timing is earlier than expected.

Cause:

This is probably due to air in the fuel.

The fault may also be due to a short circuit or open circuit in the unit injector circuit. Electrical or mechanical fault in the unit injector.

Notes:

The fault causes the engine to run somewhat unevenly.

Action:

Check the electrical cables and clean the connector.

Check that the fuel supply to the unit injector is functioning correctly.

Bleed the fuel system.

Clear the fault code memory and start the engine.

If the fault remains, renew the unit injector.