Can drive — fix at your convenience.
This code means the engine computer detected an intermittent or erratic signal from the purge flow sensor in the fuel vapor (EVAP) system. It usually points to loose or corroded wiring, a flaky connector, or a sensor that's starting to fail. Because the problem comes and goes, it's an emissions code that's typically fixable by cleaning or repairing the circuit rather than major engine work.
$100 – $350
Varies by vehicle and root cause.
Yes, in most cases you can drive normally for a while. It's an intermittent emissions fault that won't harm the engine, but get it checked soon since the issue can be tricky to pin down and the light will stay on.
Repairs usually fall between $100 and $350. Cleaning or repairing a connector is cheaper, while diagnosing an intermittent fault and replacing the purge sensor adds time and parts cost.
It's low severity. The car stays drivable and the engine isn't at risk, but the intermittent signal keeps the check engine light on and can cause an emissions failure, so it's worth addressing.
Because it's intermittent, the fault may not be present when a mechanic checks it. Loose wiring and flaky connectors are common culprits, so techs often wiggle-test the harness and connectors to recreate the problem.