Scania fault code 552
Code 552 is used by 9 different Scania systems. Choose the control unit shown in your diagnostic tool:
EBS Electronic Braking System
Control unit
The control unit's driver stage cannot be shut off.
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EMS Engine Management System
Post injection ontime too long, cylinder 8.
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
CAN bus
Fault in CAN messages for current engine torque.
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BCI
Expansion unit, supply voltage
Expansion unit supply voltage is too high. The supply voltage should be between 16 V and 32 V.
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LAS Locking and Alarm System
Motion sensor in the cab
Diagnostics of MMS is not possible.
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CMS
Supply voltage [V]
The supply voltage to the chassis management system control unit has been too high, above 32 V.
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ALM
Micro switch reserved pin (truck)/micro switch A10 (bus), short circuit
The micro switch is short-circuited to earth.
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EST
Motor pump unit
The supply voltage to the motor pump unit is too high.
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ESTA
Motor pump unit
The supply voltage to the motor pump unit is too high.
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