# Service campaign Circular 93OE

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 campaign
- NHTSA id: 11021432
- Published by NHTSA: 2025\-08\-05
- Manufacturer's number: Circular 93OE
- Manufacturer's date: 2025\-07\-02
- Campaign id or software version: 93OE
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

Audi is providing a software update to help improve the performance of the Onboard Charger with Integrated DC/DC\-Converter \(OCDC\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021432-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021432-9999.pdf)

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

## Vehicles listed

- 2024 AUDI Q4 E\-TRON
- 2024 AUDI Q4 SPORTBACK E\-TRON

JSON: [/v1/bulletins/11021432](/v1/bulletins/11021432)

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