Scania fault code 259
Code 259 is used by 14 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Mass flow sensor
The voltage in the circuit has been above the permitted level.
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TMS Transmission Management System
Clutch actuator, clutch movement too small
The gearbox control unit (TMS) has detected a difference in position as regards the position of the pushrod relative to the position of the clutch actuator.
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BMU Battery Management Unit
Break, voltage class B from the propulsion battery
The control unit has detected abnormal voltage values, indicating a break in the voltage class B from the propulsion battery.
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EMD
Intake air mass flow sensor T126
The voltage in the circuit has been above the permitted level.
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EME
Intake air mass flow sensor T126
The voltage in the circuit has been above the permitted level.
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EMO
Intake air mass flow sensor T126
The voltage in the circuit has been above the permitted level.
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VDT
Solenoid valve
Unknown fault.
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ELC Electronically controlled air suspension
Sensor signal from front axle level sensor.
The voltage on the input from the level sensor is too high.
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ABS Anti-lock Braking System
Brake pressure limitation
The voltage from the EBL brake pressure sensor has been above the permitted level.
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ALM
Secondary wake-up signal, short circuit
The secondary wake-up signal is short-circuited to ground.
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WTA
Water temperature sensor
The water temperature rises too quickly.
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COMMUNICATOR Communicator (C200 / C300 / C400)
No contact with the GSM antenna
The fault code is activated when the connection between the control unit and GSM antenna U20 has been interrupted for more than 25 seconds.
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EACS
Voltage class B
The electric motor cannot run at the requested speed due to the RES control unit limiting the allowed current consumption.
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EQU
Supply voltage 24 V
The 24 V supply voltage is missing.
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