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

Tags: Audi  EVAP 
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