This bulletin applies to 2009-2016 Audi A4, A5, A5 Cabriolet, A6, Q5 and TT vehicles equipped with a 2.0L TFSI Evo2 engine. The engine may judder or run erratically and may judder during acceleration. No event may be stored in the electronic control unit (ECU). The air mass meter is suspected to be faulty, with possible incorrect function on the sensor elements of the air mass meter.
Remove the connector of the air mass meter.
Perform a test drive and see if the complaint persists. If it does, do not replace the air mass meter, as the cause lies elsewhere. Look for other possible causes such as air leaks in the intake system, a dirty or incorrectly-fitted air filter element, etc. If the complaint does not persist, replace the air mass meter.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.