Can drive — fix at your convenience.
This code means the engine computer detected a short circuit in the control wiring for the secondary air injection switching valve 'B'. A short usually means a wire is rubbing against metal or another wire, or the valve has an internal fault. The fix typically involves locating and repairing the shorted wiring or replacing the valve.
$120 – $450
Varies by vehicle and root cause.
Yes, it's typically safe. The shorted circuit only involves an emissions valve, so your car drives and brakes normally. Just get it repaired before any emissions inspection.
Most repairs run about $120 to $450. Tracing and fixing a shorted wire is usually cheaper, while replacing the switching valve costs more depending on the car.
No, it's low severity. It won't damage your engine or leave you stranded, but it keeps the check engine light on and can cause an emissions test failure.
Most often it's a wire whose insulation has worn through and is touching metal or another wire. A failed valve with an internal short or a damaged connector can also be the cause.