Scania fault code 20481
Code 20481 is used by 3 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
EGR content
A very large quantity of EGR gases returns even though the control unit has instructed the flap in the EGR valve to be fully, or almost fully, closed.
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EMU
Vehicle charging inlet box R130, positive contactor, feedback signal, short circuit to earth
The control unit gives an implausibly low voltage, which indicates a short circuit to earth.
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SC
Tachograph
The tachograph has been broken into. The tachograph display shows code 26 for this fault code.
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