OBD-II code · Emissions / Engine
A big EVAP leak — usually obvious: missing gas cap, split filler neck, disconnected hose, or a purge valve stuck wide open. You may even smell raw fuel.
Same canister quote as P0442. Large leaks are the easiest to find, which makes a big-ticket guess here especially cynical.
Typical guess-and-swap cost: $600–$900 (canister) when a $12 clamp or missing cap was the cause
Visual inspection plus a smoke test. A large leak is almost always findable in under 30 minutes and rarely needs a canister.
Mobile service in Canyon Lake, San Antonio & Austin. Written report with root cause — see a sample.