Technical Service Bulletins

Tiny Mystery Leak

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Tiny Mystery Leak

This bulletin applies to 2011 Audi A8 vehicles. The MIL may be on, with no leak found in the EVAP system, and a DTC P0456 (very small EVAP leak) stored in the ECM.

New software in the control module (J623) addresses the condition.

Reference the SVM table below to determine the appropriate SVM update code. If the existing software is already at the new version levels shown below, contact Audi technical assistance for further instruction.

Model   A8

Engine   4.2 FSI

Old software P/N  4H0907560A

Old software version   0006

New software P/N  4H0907560C

New software version   0004

SVM   02A031

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