Can drive — fix at your convenience.
This code means the downstream oxygen sensor on bank 2 is sending the computer a signal that's malfunctioning or outside the expected range. Because this sensor monitors the catalytic converter rather than adjusting fuel, the effect on driving is usually minor. It's most often fixed by replacing the sensor, though wiring or connector issues can also be the cause.
$150 – $350
Varies by vehicle and root cause.
Yes, usually. The downstream sensor mainly watches the catalytic converter, so the car typically drives normally. Still, plan to fix it before an emissions test since the light will stay on.
Most repairs land between $150 and $350. The oxygen sensor and labor are the main costs, while a wiring or connector repair tends to be cheaper.
It's a low-severity code in most cases. It rarely affects performance, but it keeps the check engine light on and can cause an emissions failure if left unaddressed.
Not necessarily. This code points to the sensor circuit itself, not the converter. A faulty rear sensor can throw the code even when the catalytic converter is perfectly fine, so the sensor should be checked first.