Fault code: EMS 13058 SCANIA

Error identification:

The engine control unit does not receive a message from the coordinator about the tachograph.

Cause:

Communication between the engine control unit and the coordinator is broken.

If the fault code has only been generated once, this may be due to the voltage to the coordinator having been interrupted while the engine control unit has been supplied with voltage. This may be because the coordinator or tachograph has been renewed.

If the fault code is generated frequently, this is probably due to problems with electrical cables or loose connections.

If this fault code has been generated, but not fault code 16384, then there is probably a fault in the electrical cables. If fault code 16384 has been generated at the same time, there is probably a fault in the engine control unit.

Notes:

The fault causes the speed to be set to 15 km/h. This means, for example, that the cruise control, speed limiter and power take-off functions do not work.

Action:

General troubleshooting: Clear the fault code memory and test start the engine. Switch the ignition off and on with the starter key.

If the fault code recurs, check the electrical cables and clean the contactors. If this does not help, check that the control units receive 15 voltage off and on at the same time.

If the above does not help, renew the coordinator. If this does not help, renew the engine control unit.

Remember to check and clear fault codes in the coordinator.