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Service bulletins for the 2014 Audi A6

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1384 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
A011498 2038166-2017-12-05. Service bulletin. ENGINE AND ENGINE COOLING. The engine warning light is on after engine replacement. The engine is not running roughly. However, fault codes are stored in the engine control module (ECM). The fault codes occur at light load, between 8% and 14% accelerator pedal position. The programmed values for the misfire adaption are not automatically reset when the memory is deleted. The adaption must be reset after the engine is installed.
Dealer Letter -2017-12-05. Service bulletin. ENGINE AND ENGINE COOLING. This communication is to inform you of upcoming Update 24Z6. On Audi vehicles with a 3.0L TFSI engine produced during a certain period, it is possible that the membrane on the vacuum actuator for the intake manifold flaps may tear. As a result, the intake manifold flaps do not function and the engine indicator light turns on. Install new manifold actuators.
Dealer Letter-Up2017-12-05. Service bulletin. ENGINE AND ENGINE COOLING. This communication is to inform you of a revision to Update 24Z6. The revision is in regards to the manifold actuator.
Update Bulletin2017-12-05. Service bulletin. ENGINE AND ENGINE COOLING. On Audi vehicles with a 3.0L TFSI engine produced during a certain period, it is possible that the membrane on the vacuum actuator for the intake manifold flaps may tear. As a result, the intake manifold flaps do not function and the engine indicator light turns on. This Update is in effect until removed. Procedure is valid only for vehicles that show the 24Z6 code in the ElsaWeb Campaign/Action Information screen on the day of repair. Vehicle must be within the New Vehicle Limited Warranty. Procedure must be performed within the allotted time frame stated in this Technical Service Bulletin. Procedure must be performed on applicable vehicles in dealer inventory prior to sale. On Audi vehicles with a 3.0L TFSI engine produced during a certain period, it is possible that the membrane on the vacuum actuator for the intake manifold flaps may tear. As a result, the intake manifold flaps do not function and the engine indicator light turns on.
Update Bulletin2017-12-05. Service bulletin. ENGINE AND ENGINE COOLING. On Audi vehicles with a 3.0L TFSI engine produced during a certain period, it is possible that the membrane on the vacuum actuator for the intake manifold flaps may tear. As a result, the intake manifold flaps do not function and the engine indicator light turns on. This Update is in effect until removed. On Audi vehicles with a 3.0L TFSI engine produced during a certain period, it is possible that the membrane on the vacuum actuator for the intake manifold flaps may tear. As a result, the intake manifold flaps do not function and the engine indicator light turns on. This Update is in effect until removed. Procedure is valid only for vehicles that show the 24Z6 code in the ElsaWeb Campaign/Action Information screen on the day of repair. Vehicle must be within the New Vehicle Limited Warranty. Procedure must be performed within the allotted time frame stated in this Technical Service Bulletin. Procedure must be performed on applicable vehicles in dealer inventory prior to sale. On Audi vehicles with a 3.0L TFSI engine produced during a certain period, it is possible that the membrane on the vacuum actuator for the intake manifold flaps may tear. As a result, the intake manifold flaps do not function and the engine indicator light turns on.
A011314 2033919-2017-12-05. Service bulletin. POWER TRAIN; ENGINE. MIL on. DTCs are stored in the engine control module. There may be slight power reduction at high RPMs. One of the vacuum actuators on intake runner bank 1 or bank 2 is defective.
A011386 2033630-2017-11-17. Service bulletin. EQUIPMENT:ELECTRICAL; ENGINE. MIL on. Rough idle. DTCs are stored in the Engine Control Module (ECM), J623 (address word 01). Engine may have reduced performance without significant loss of power or stalling. Because there are a number of different misfire faults (unrelated to ignition coil operation) that could cause the MIL to illuminate, proper Guided Fault Finding (GFF) misfire diagnosis must be followed before any ignition coils are replaced.
A171338 2012913-2017-11-17. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 17 number 10-07 dated June 3, 2010. Oil filter cartridge requires replacement.
A191335 2025303-2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 19 number 11-19 dated February 10, 2011. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service.
A191562 2025303-2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 19 number 15-61 dated July 7, 2015. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service.
A171565 2038129-2017-11-17. Service bulletin. ENGINE. Supersedes Technical Service Bulletin Group 17 number 15-63 dated June 2, 2015. A check with the engine oil service dipstick T40178 is necessary, but the adjustment values for the dipstick are not available in the Elsa repair manual. Because of a system change, the adjustment values for the service dipstick T40178 were removed from the repair manual.
Dealer Letter -2017-11-17. Service bulletin. ENGINE. This is an update to the November 3, 2015 communication where Volkswagen Group of America, Inc. issued a stop sale order for all 2013-2016 model year Audi vehicles equipped with a Gen II 3.0 liter V6 TDI engine. This was in response the notice received from the U.S. Environmental Protection Agency and California Air Resources Board of an investigation related to certain emissions compliance matters impacting certain 3.0 liter V6 TDI engine vehicles. Audi continues to actively cooperate with the relevant authorities to resolve the November 2, 2015 EPA notice of violation.
Campaign Circula2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). On certain Audi vehicles with 2.0L TFSI engine, the diaphragm of the crankcase pressure regulating valve may have been damaged. Inspect and, if necessary, install a repair kit for the crankcase pressure regulating valve.
Campaign Circula2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). On certain Audi vehicles with 2.0L TFSI engine, the diaphragm of the crankcase pressure regulating valve may have been damaged. Inspect and, if necessary, install a repair kit for the crankcase pressure regulating valve.
A191341 2025303-2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 19 number 13-35 dated March 25, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service.
A001463 2033576-2017-11-08. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Supersedes Technical Service Bulletin Group 00 number 13-49 dated May 14, 2013. Although the correct amount of oil was added to the engine during an oil change service, a check of the oil level shows that the oil level is not okay. When an unapproved aftermarket speed-filling device is used to add oil to the engine, the increased oil flow rate may force oil into the intake manifold or combustion chamber, creating the potential for engine damage.
A201434 2035073-2017-11-08. Service bulletin. EQUIPMENT:ELECTRICAL; ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 20 number 14-32 dated March 21, 2014. The MIL is on. DTC P045600 (EVAP System Leak Detected NVLD (very small leak)) is stored in the engine control module (ECM), J623 (address word 01). Drivability is not affected. The NVLD pressure switch may erroneously detect a very small leak.
A191450 2025303-2017-11-08. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 19 number 13-41 dated June 20, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service.
A011481 2035368-2017-11-08. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 01 number 13-32 dated September 26, 2013. The MIL is on. DTC P203B00 (Reductant Level Sensor Circuit Range/Performance) is stored in the engine control module (ECM), J623 (address word 01).Due to a production issue for the level sensor, the ECM cannot correctly read the reductant (AdBlue) fluid level.
A971441 2036764-2017-11-08. Service bulletin. ENGINE; ELECTRICAL SYSTEM. The MIL is on. Vehicle will not start. DTC P068A00 is stored in the engine control module (ECM), J623 (address word 01). Numerous unrelated DTCs are also stored in the system. The motronic engine control module power supply relay, J271, is not functioning properly. Because the J271 relay controls battery voltage (Terminal 30) via a ground signal sent from the ECM, numerous faults can occur in multiple control modules when it is not functioning properly.
A201432 2035073-2017-11-08. Service bulletin. ENGINE AND ENGINE COOLING. upersedes Technical Service Bulletin Group 20 number 14-31 dated January 9, 2014. The MIL is on. DTC P045600 (EVAP System Leak Detected NVLD (very small leak)) is stored in the engine control module (ECM), J623 (address word 01). Drivability is not affected. The NVLD pressure switch may erroneously detect a very small leak.
A191449 2036852-2017-11-08. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. Cooling fans stay on after engine is turned off. The cooling fans may operate for up to 10 minutes after the engine is turned off. This function is mapped to specific driving patterns and vehicle operating modes (for example, DPF regeneration). This is normal operation, and no parts should be replaced.
A011471 2036761-2017-11-08. Service bulletin. ENGINE AND ENGINE COOLING. The MIL is on. DTC P164B(00) is stored in the ECM. The oil pressure switch is defective.
A201431 2035073-2017-11-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Supersedes Technical Service Bulletin Group 20 number 13-28 dated November 14, 2013. The MIL is on. DTC P045600 (EVAP System Leak Detected NVLD (very small leak)) is stored in the ECM. Drivability is not affected. The NVLD pressure switch may erroneously detect a very small leak.
A011463 2033630-2017-11-08. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Supersedes Technical Service Bulletin Group 01 number 13-86 dated April 15, 2013. The MIL is on. There is a rough idle. DTCs are stored in the ECM. Engine may have reduced performance without significant loss of power or stalling. Because there are a number of different misfire faults (unrelated to ignition coil operation) that could cause the MIL to illuminate, proper Guided Fault Finding (GFF) misfire diagnosis must be followed before any ignition coils are replaced.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.