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Audis Are Making Strange Noises

Nov. 8, 2021

Strange noises may be heard from the engine compartment on various Audi vehicles equipped with a 3.0L engine. The noises may be traced to the lower area of the compressor/intake manifold.

Information courtesy of Mitchell 1,

Mike Mavrigian

Strange noises may be heard from the engine compartment on various Audi vehicles equipped with a 3.0L engine. The noises may be traced to the lower area of the compressor/intake manifold. DTC P052E00 (PCV regulator valve performance) may be stored in the ECM. This applies to 2015 A4, 2015-2017 A5, 2012-2018 A6/A7, 2011-103 and 2015-2017 A8, 2013-2017 Q5, 2011-2019 Q7, 2013-2015 S4, 2012-2017 S5 and 2014-2017 SQ5 vehicles.

Fuel additives can cause the elbow piece on the crankcase breather to crack. The elbow piece on the crankcase breather can be individually replaced. The hose clips no longer open as required. If the hose clip is over-stretched, this can lead to leaks in the breather system. Replace the elbow and hose clip. The elbow is available as P/N 06E103402. The clip is P/N N10769401.

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.

About the Author

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.