P2181 on the 2009 Audi R8
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| A191669 2043770- | 2017-10-04. Service bulletin. The MIL is on due to DTC P218100 being stored in the ECM. The coolant temperature gauge does not work, the vehicle does not reach operating temperature, and the cooling fan runs constantly. The coolant temperature control sends an implausible signal. The coolant thermostat does not work. |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.