Scania fault code 277
Code 277 is used by 8 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Coolant temperature sensor T33
The coolant temperature sensor value has not varied enough with increased engine load.
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TMS Transmission Management System
Electrical clutch actuator, short circuit or open circuit
Short circuit or open circuit to the electric motor phases on the electric clutch actuator.
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EMD
Coolant temperature sensor T33
The coolant temperature value does not change even though the engine is under high load.
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EME
Coolant temperature sensor T33
The coolant temperature value does not change even though the engine is under high load.
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EMO
Coolant temperature sensor T33
The coolant temperature value does not change even though the engine is under high load.
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VDT
Solenoid valve
Unknown fault.
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LAS Locking and Alarm System
Alarm code, front grille panel
The fault affects engine performance. It is difficult to start the engine. Engine emissions are affected.
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EACS
Oil level monitor
Short circuit in the oil level monitor circuit.
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