P0441

What does this code mean?

The EVAP monitor detects purge behavior that does not match its expected response. This is not automatically a leak-size code or proof of a loose fuel cap. Monitor strategy varies by vehicle; an extended code and manufacturer procedure may describe the failure more precisely.

Sources and interpretation [1]

A code identifies a detected condition, not a part that must automatically be replaced.

Before replacing a part

Record the full code and recent software work. Use the specified EVAP test equipment and pressure limits. In the Atlas example, the diagnostic sequence separates canister debris, purge-valve vacuum testing and leak-detection wiring; do not skip directly to a fuel-cap replacement.

Scan worksheet →

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

Original wording in English

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Sources and interpretation

These explanations are editorial summaries of the linked manufacturer material. PDF page numbers count from the first file page. Original publications are in English; translations are reference aids. A cited edition is not a claim that it is the manufacturer's latest instruction.

1. Audi TT Quick Reference Specification Book · October 2013 ↗

   Audi of America · PDF page(s) 140 · 2013-10

2. 01-19-09TT / 2057754/2 · EVAP faults after software update ↗

   Volkswagen Group of America · PDF page(s) 1, 2 · 2020-10-02

Source check date · 2026-10-27

Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.