# Service bulletin A0121082052591\_2

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.

- Type: Service bulletin
- NHTSA id: 10199210
- Published by NHTSA: 2021\-08\-04
- Manufacturer's number: A0121082052591\_2
- Manufacturer's date: 2021\-07\-12
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; EQUIPMENT

## NHTSA's summary

This bulletin contains instructions for correcting DTC P045600.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199210-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199210-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Equipment and accessories, Engine control module

## Trouble codes named

P0456

## Vehicles listed

- 2018 AUDI Q5
- 2018 AUDI SQ5

## Other bulletins for the same vehicles and component

- [A2723602067906\_3](/bulletins/10242930.md), 2023-10-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). This bulletin provides information for when DTC P0A7D00 is stored.
- [A1922292058767\_8](/bulletins/10208895.md), 2022-04-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). This bulletin contains instructions for DTCs P218100, P017B00, P308100, and P01E400.
- [A2022402065287\_2](/bulletins/10206879.md), 2022-02-04, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:HOSES/VALVES/SENSORS; UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). This bulletin describes the repair procedure to address an internal defect in the EVAP leak detection pump causing false leak detection.
- [A2021392065287\_1](/bulletins/10205901.md), 2022-01-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). There is an internal defect in the EVAP leak detection pump causing false leak detection.

JSON: [/v1/bulletins/10199210](/v1/bulletins/10199210)

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