Fault code: 53508 SCANIA

Error identification:

The engine control unit has no CAN messages from the coordinator on pins B1/9 and B1/10.

Cause:

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

If the fault code has only been generated once, this may be because the coordinator 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 5687, then there is probably a fault in the electrical cables. If fault code 5687 has been generated at the same time, there is probably a fault in the engine control unit.

Notes:

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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.