S6 V8-4.2L (BBD) (2004)
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From the codes present in the DTC memories, you can see that control module -2- has no connection to control modules -1- or -3-.
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Switch off ignition.
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Disconnect the control modules which are linked by the bus wires and check whether there is an open circuit in one of the bus wires
Refer to Wiring Diagrams
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If no malfunction can be found in the bus wires replace control module 2.
Example 3:
From the codes registered by the DTC memories, you can see that none of the control modules are able to transmit or receive signals.
