P0496

What does this code mean?

The EVAP system detects excessive purge behavior; the exact test may infer flow from tank pressure or vacuum response rather than measure vapor flow directly. It is distinct from a small-leak code. A purge valve is a possible investigation point, but the cited manufacturer sequence does not treat the code alone as a confirmed valve failure.

Sources and interpretation [1]

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

Before replacing a part

Retain the suffix and inspect the applicable EVAP test sequence. Separate debris contamination, valve sealing and leak-detection faults using the prescribed tests. Do not apply another manufacturer's vacuum threshold or infer that every case needs a purge valve.

Scan worksheet →

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. 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗

   Ford Motor Company · PDF page(s) 11, 12 · 2024-04-16

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.