Scania fault code 547
Code 547 is used by 15 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Post injection ontime too long, cylinder 3.
The error is detected when the post injection ontime, for either post1 or post2, has been consequtively too long for a period of time.
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VDT
Output signal
Short circuit to battery on output for control unit E754.
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COO Coordinator
Manual activation of retarder
The voltage in the circuit for the retarder lever or for the auxiliary brake lever has been below the permitted level.
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MBS
Brown CAN bus, no communication
The MBS control unit fails to detect communication on the brown CAN bus within the set time period.
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ELC Electronically controlled air suspension
Voltage supply for solenoid valve.
The voltage on the output to the solenoid valve has been too high.
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BCI
Configuration fault, Expansion unit F
The expansion unit is responding, but does not exist according to the vehicle configuration.
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LAS Locking and Alarm System
Motion sensor in the cab
Implausible values measured by the motion sensor connected to the slave unit.
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CMS
Coordinator
CAN communication with the coordinator is interrupted.
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ALM
Micro switch upper storage compartment passenger side (truck)/micro switch A8 (bus), open circuit
Open circuit in the micro switch.
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ACS Articulation Control System
Proportional valve
Open circuit in the proportional valve circuit.
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EST
Piston position sensor
Fault in the CAN communication with the piston position sensor.
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ESTA
Piston position sensor
Fault in the CAN communication with the piston position sensor.
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TCC
TCC control unit, incorrect chassis serial number
The vehicle's chassis serial number does not correspond with the chassis serial number in the TCC control unit.
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DCU
Door motor brake rear door leaf, short circuit output
- Maximum current level has been detected on the door motor brake’s 24 V output (CN6-17). - The current to the door motor brake has exceeded 2 A.
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ACSX
Proportional valve
Open circuit in the proportional valve circuit.
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