Scania fault code 777
Code 777 is used by 10 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Steering wheel switch for cruise control, CAN messages missing
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BMU Battery Management Unit
Incorrect behaviour of the coolant pump in the direct current converter E84 (DCC) and inverter E82 (MGU) cooling system
The coolant pump of the direct current converter and inverter cooling system does not respond correctly to a request. The rotational speed of the coolant pump for the direct curren…
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COO Coordinator
CAN bus for driver support
All communication on the CAN bus is interrupted.
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MBS
Sensor for engine compartment door, right-hand, open circuit
The voltage supply to the control unit input for the right engine compartment hatch sensor is 12 V. This indicates an open circuit.
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DDU
CAN messages are missing from CAN bus 2
The DDU control unit has not received any CAN messages. The fault code is only set if the 15 voltage is on.
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ICL Instrument Cluster
Communication with electronic chassis level control (ELC) for articulated bus
No can messages from the suspension management system that regulates the rear section of the bus.
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CMS
Fuel theft alarm
Information on the alarm status is missing or has been implausible for over 10 minutes.
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DAS
CAN bus for short-range radar, right
All communication on the CAN bus has been interrupted.
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COMMUNICATOR Communicator (C200 / C300 / C400)
Communication with the bodywork system (BWE)
The RTC control unit has not received any CAN messages from the BWE control unit within the time expected.
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DCU
Sensing strip, front or single door leaf, open circuit
- An open circuit has been detected on the input (CN3-11) for the sensing strip. - The door control unit has measured a resistance on the sensing strip higher than approx. 12,000 o…
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