Can drive — fix at your convenience.
This code means the evaporative emission (EVAP) system isn't purging fuel vapors correctly, with either too much or too little flow through the purge valve. Common causes include a stuck purge valve, a faulty vent valve, cracked vapor hoses, or a loose gas cap. Repairs usually involve replacing the purge or vent valve, fixing hoses, or simply tightening or replacing the gas cap.
$100 – $600
Varies by vehicle and root cause.
Yes, in almost all cases. The EVAP system handles fuel vapors and doesn't affect the engine's ability to run, so the car drives normally. Just don't ignore it long-term, since it affects emissions and may be as simple as a loose gas cap.
It depends on the cause. A new gas cap can be under $40, while replacing a purge valve or repairing hoses typically runs $100 to $600 including labor.
It's low severity. There's no safety risk and the car runs fine, but it does cause an emissions test failure and a lit check engine light, so it should be repaired when convenient.
Yes, a loose, cracked, or missing gas cap can disturb EVAP system flow and trigger this code. It's always worth checking the cap first, since it's the cheapest and easiest possible fix.