The MIL is on.
Audi technical service bulletin A211522 2039006- for 2013-2014 Audi A6, 2013-2014 Audi Q5 and 2013-2014 Audi A5 and others.
- Bulletin number
- A211522 2039006-
- Component
- Engine and engine cooling: engine: gasoline: turbo/supercharger
- Summary
- Supersedes Technical Service Bulletin Group 21 number 14-21 dated November 26, 2014. The MIL is on. Customer may report a reduction in power. DTC P029900 (Turbo/Super Charger Underboost) is stored in the engine control module (ECM), J623 (address word 01). The circlip connecting the turbo wastegate actuator rod and the wastegate flap lever can fall off due to low tension of the clip. Consequently, the wastegate linkage becomes disconnected, causing MIL on and DTC P029900.
Owners of these vehicles have filed 151 complaints in the engine category.
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