Can drive — fix at your convenience.
This code means the heater circuit inside the bank 2 upstream oxygen sensor isn't working as expected, so the sensor takes too long to reach operating temperature. It's most often caused by a failed sensor heater, a blown fuse, or wiring problems in the heater circuit. It's a common, sensor-related code and is usually fixed by replacing the sensor or repairing its wiring.
$150 – $400
Varies by vehicle and root cause.
Usually yes. The heater just helps the sensor warm up faster, so the car will still run and won't strand you. Just get it fixed within a week or two so the sensor reads accurately and you can pass an emissions test.
Most repairs run about $150 to $400. The oxygen sensor and labor make up most of that, while a simple blown fuse or wiring repair can be much cheaper.
It's a low-severity code. It won't damage your engine, but a sensor that can't heat up properly hurts cold-start fuel economy and emissions, so it's best to address it before your next smog check.
The built-in heater brings the oxygen sensor up to operating temperature quickly so it can give accurate readings soon after you start the car. When the heater fails, the sensor stays inaccurate longer, which is exactly what this code is warning about.