Scania fault code 1142
Code 1142 is used by 6 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
Low exhaust gas pressure
When requesting low back pressure (0.5-4 bar) and low engine speed (500-2,400 rpm), the back pressure in the exhaust brake engine does not reach the expected level.
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EMD
Low exhaust gas pressure
The exhaust gas pressure deviates from the requested exhaust gas pressure during heating of the exhaust gas aftertreatment system.
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EME
Low exhaust gas pressure
The exhaust gas pressure deviates from the requested exhaust gas pressure during heating of the exhaust gas aftertreatment system.
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EMO
Low exhaust gas pressure
The exhaust gas pressure deviates from the requested exhaust gas pressure during heating of the exhaust gas aftertreatment system.
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VDT
Internal fault
The safety check has identified a prohibited activation of solenoid valves TB and RBK at the same time without a brake request.
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MBS
Evaporator fan expansion unit K, short circuit
The pin for the evaporator fan on expansion unit K is short-circuited to the voltage supply. The voltage for the pin is outside the permitted value.
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