Audi A5 2009–2013 — technical service bulletin
Bulletin 01133520354541 · NHTSA communication 10221982 · issued Oct 8, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2013
model years
17
vehicle entries
Official summary
During reset of the service reminder, the following message appears on the ODIS tester: ?Secondary air injection system - checking secondary air mass?. Under certain driving conditions, the secondary air ports in the cylinder head can accumulate carbon over time, causing a restriction. The ODIS tester can identify the state of the restriction, and will request that the system is cleaned in order to prevent the MIL from illuminating.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.