Service bulletins for the 2018 Porsche Panamera
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
798 on file from NHTSA, as of 2026-10-19.
About P0C4A on the 2018 Porsche Panamera: what the code means, and the bulletins and recalls about the same components.
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By trouble code
Only bulletins with trouble code: P0C4A are shown. Show all
| 122-Z2P4B-06 | 2018-06-25. Service bulletin. ENGINE AND ENGINE COOLING. Technical Background The coolant pump for the high voltage battery actively monitors its own speed and current consumption. For a given commanded speed, if the actual pump speed exceeds a defined value and the current consumption drops below a certain threshold, a dry run condition is detected. The pump communicates this to the high voltage battery control unit and fault code P0C4A00 is stored. One possible cause of this is air in the low temperature cooling system. This fault can take several hundred miles to set. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.