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Porsche Cayenne May Suffer From 'Bad Grounding'

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MIL light on? A bad ground could be to blame on the 2015-2016 Cayenne.

Owners of a 2015-2016 Porsche Cayenne may notice that a MIL is on. Often this is accompanied by other unwanted behavior.

The technician may find DTC P0C47400 is present in the high voltage battery. A bad ground has been found, in a number of cases.

The service recommendation is to check ground continuity and replace the electric water pump and the electric water pump relay, if necessary.

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