Fault code: 5684 SCANIA

Error identification:

Incorrect or unreliable data.

Cause:

Internal fault in the control unit.

Notes:

The control unit measures the engine speed on one engine speed sensor incorrectly.

The fuel supply is cut off as long as the fault is active. If this lasts long enough, the engine will be switched off.

As a result, the fault may generate other fault codes.

Action:

Clear the fault code memory and run the vehicle for approx. 10 minutes. Check whether the fault code has been regenerated. If the fault code has been regenerated, renew the control unit.