Scania MBS DTC 878 Door fan central door, vehicle speed 1, short-circuited

Q: What does Scania MBS fault code 878 mean?

Door fan central door, vehicle speed 1, short-circuited. The MBS control unit has detected that the door fan to the central door, speed 1, is short circuited to earth or battery voltage. The voltage for the pin is outside the permitted value. Code 878 (decimal). Some diagnostic tools show it in hexadecimal as 036E.

Q: How to fix Scania MBS fault code 878?

- Check the door fan. - Check the door fan cable harness and harness-to-component connectors.

MBS MBS control unit · Scania

Code 878 (decimal). Some diagnostic tools show it in hexadecimal as 036E.

In short

The MBS control unit has detected that the door fan to the central door, speed 1, is short circuited to earth or battery voltage. The voltage for the pin is outside the permitted value.

Applies to: MBS3 (MBS)

What does Scania MBS fault code 878 mean?

The MBS control unit has detected that the door fan to the central door, speed 1, is short circuited to earth or battery voltage. The voltage for the pin is outside the permitted value.

What causes Scania DTC 878?

Fault in the cable harness or harness-to-component connector to the door fan.

How does the system react?

The function of the door fan is degraded.

What are the symptoms?

The driver cannot reduce the speed of the door fan using the button on the instrument panel.

How to fix Scania MBS fault code 878?

Check the door fan.
Check the door fan cable harness and harness-to-component connectors.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 878 in other Scania systems

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