P1423 on the 2001 Audi A8
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.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 260702 | 2007-08-15. Service bulletin. MIL ON (DTC'S P0300, P0411, P1128, P1130, P1411, P1423). THIS COULD BE CAUSED BY A CRACKED OR BROKEN VACUUM HOSE. *KB |
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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.