Scania fault code 20480
Code 20480 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
EMS Engine Management System
EGR content
Only a very small quantity of EGR gases returns even though the control unit has instructed the flap in the EGR valve to be fully, or almost fully, open.
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EMU
Vehicle charging inlet box R130, positive contactor, feedback signal, short circuit to voltage supply
The control unit states an implausibly high voltage, which indicates a break in the positive contactor circuit.
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COO Coordinator
CAN bus
All communication on the CAN bus has been interrupted.
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SC
Tachograph
Incorrect or unreliable data. The tachograph display shows code 25 for this fault code.
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