MIL on. Customer may report a reduction in power
Audi technical service bulletin A211421 2039006- for 2013-2014 Audi A6, 2013-2014 Audi Q5 and 2013-2014 Audi A5 and others.
- Bulletin number
- A211421 2039006-
- Component
- Engine
- Summary
- Supersedes Technical Service Bulletin Group 21 number 14-20 dated November 17, 2014. MIL 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 of 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.
Vehicles covered
VIN decoder
See the problems and recalls for an exact car
Buying a used Audi A6?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history