Fault code: EMS 4887 SCANIA

Error identification:

The signal from the engine speed sensor has been incorrect from the beginning.

Cause:

Implausible signal from the engine speed sensor.

The fault code may be generated when starting in extremely cold weather or with a poor battery.

Notes:

If fault code 4881 has been registered but not fault code 4865, the maximum engine torque is reduced by 30% as long as the fault is active. In addition, the engine s high idle speed is lower than usual.

If both rotational speed sensors are faulty, the engine will shut down.

Action:

Check the rotational speed sensors, harness-to-harness connectors and electrical cables.

Check the battery voltage.