Scania fault code 834
Code 834 is used by 11 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Camshaft position sensor T135
The control unit indicates a short circuit to earth in the cable harness of the camshaft position sensor.
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BMU Battery Management Unit
The wear counter for the contactor unit, implausibly high
Loss of voltage supply to the IBU unit when the electric drive system is active sets the contactor unit wear counter to maximum value.
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EMD
Camshaft position sensor T135
The camshaft position sensor is shorted to ground.
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EME
Camshaft position sensor T135
The camshaft position sensor is shorted to ground.
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EMO
Camshaft position sensor T135
The camshaft position sensor is shorted to ground.
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VDT
Gearbox oil
Gearbox oil level too high.
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COO Coordinator
CAN communication with switch module
Fault in communication with the switch module.
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MBS
#Not implemented. Defroster valve defective
Feedback sensor is out of range or short circuit in flap control.
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PCS
CAN message missing
Messages have not been received within 5 nominal transfer rate periods.
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CMS
Solenoid valve for tag axle lifting bellows, short circuit to earth
Solenoid valve for tag axle lifting bellows, PWM output 4 (pin A18), is short-circuited to earth.
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DCC
Low voltage in the direct current converter E84 on the voltage class B side
Voltage class B to the direct current converter is too low.
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