Can drive — fix at your convenience.
This code means the engine computer detected an open (broken) circuit in the control wiring for the secondary air injection switching valve 'B'. An 'open' usually means a wire is broken, a connector is loose, or the valve coil has failed internally. Repairs commonly involve fixing the wiring or connector, or replacing the valve, and are usually straightforward.
$120 – $450
Varies by vehicle and root cause.
Yes, it's generally safe to keep driving. The affected valve only matters for cold-start emissions, so your car will run and stop just as it did before. Get it fixed before an emissions test.
Expect roughly $120 to $450. A broken wire or loose connector is cheap to repair, while a new switching valve raises the cost depending on the vehicle.
No, it's a low-severity emissions code. It won't strand you or harm the engine, but it keeps the check engine light on and can cause an emissions failure.
It means the electrical path to the valve is broken somewhere, so current can't flow. That's usually a snapped wire, a disconnected plug, or a failed coil inside the valve itself.