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Service bulletin A201557 2042166-

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10123654
Published by NHTSA2017-11-17
Manufacturer's numberA201557 2042166-
Manufacturer's date2015-12-02
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Supersedes Technical Service Bulletin Group 20 number 15-53 dated October 29, 2015. 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. Various parts have been replaced under warranty for the condition noted above, but no issues were identified with these parts. In an effort to gain information, we are asking that you contact the Audi Technical Assistance Center (TAC) before replacing any parts. This will assist us in diagnosing any potential issues with the condition noted above.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Trouble codes named

P0456

Vehicles listed
AUDI A3 CABRIOLET2015 to 2016
AUDI A4 ALLROAD2015, 2016
AUDI A52015, 2016
AUDI A5 CABRIOLET2015 to 2016
AUDI A62016
AUDI A72016
AUDI A82015, 2016
AUDI ALLROAD2015 to 2016
AUDI Q52015, 2016
AUDI RS 52015
AUDI RS 52016
AUDI RS 72016

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
18V8620002018-12-05. ELECTRICAL SYSTEM:WIRING
20181742018-04-11. Electrical
20174832017-10-06. Electrical
17V6220002017-10-05. ELECTRICAL SYSTEM:WIRING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB_2073747_42026-08-05. Service bulletin. This bulletin provides informatoinw hent here are scratches or a coating on the cover of the instrument cluster, or particles inside of the housing.
TSB_2059335_72026-07-07. Service bulletin. This bulletin provides information when there are noises from the area around the instrument cluster.
TSB_2074729_32026-07-07. Service bulletin. This bulletin provides informationwhen noises/vibration are detected from front of vehicle in dynamic mode.
TSB_2080517_42026-06-04. Service bulletin. This bulletin provides informaiotn when the starter battery is discharged or defective.
TSB_2080517_32026-05-05. Service bulletin. This bulletin provides informaiotn when the starter battery is discharged or defective.
TSB_2081409_12026-04-07. Service bulletin. This bulletin provides informaiton regarding the Universal Traffic Recorder.
TSB_2081405_12026-04-07. Service bulletin. This bulletin provides informaiotn about various infortainment system complaints.
TSB_2024323_132026-04-07. Service bulletin. This bulletin provides information when the parking assistance gives false warnings.
TSB_2024323_122026-04-07. Service bulletin. This bulletin provides information when the parking assistance gives false warnings.
TSB_2080517_22026-03-03. Service bulletin. This bulletin provides informaiotn when the starter battery is discharged or defective.