Fault code: EMS 5778 SCANIA

Error identification:

Incorrect supply voltage to the injectors.

Cause:

A possible reason is a defective engine control unit.

Notes:

The engine control unit switches off the EGR circuit, if applicable, and the engine power is reduced.

The fault code cannot be deleted when it is active.

Action:

Erase the fault code and restart the engine. If the fault code it still active, renew the engine control unit.

If the operating time since the fault code was generated exceeds 10 hours, drain the EGR cooler as there is a risk that condensed water will form in the air-cooled EGR cooler when the EGR system has been switched off. Drain according to the instructions in Workshop Manual, sub-group 01-65.