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P1999 Diagnostic Trouble Code Discussion for August 2011

End Stage ZAS Valve 2, ZAS Version Only

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Trouble Ticket Help Requests for DTC P1999
Help Request Posted
2003 Audi A6 Quattro 3.0L Poor Idle Quality, Surge, MIL Lamp on VIN: WAULT64B43
P1999: or 18047 friction to high code AZ. Hi Audi techs, we have this Audi with codes P0335, P01999, P0025. The car surges at idle hot engine often. The oil pressure was below specs. We changed the oil and it improved same but still not at specs.It reads 24 psi hot idle, and 40 psi hot at 2 K rpm. The...
August 27, 2011