Can drive — fix at your convenience.
This code is set when the catalyst temperature sensor on bank 1 reports a voltage that's lower than expected, suggesting a short, an open circuit, or a failing sensor. It's usually an electrical issue rather than an actual catalyst fault. Repairs typically involve inspecting the wiring and connector and replacing the sensor if needed, which is generally a low-cost fix.
$120 – $450
Varies by vehicle and root cause.
Yes, in most cases. It's a sensor-signal issue that doesn't affect how the car drives or its safety. The main reasons to fix it are to turn off the check engine light and pass emissions testing.
This is a low-cost code to repair. Most fixes range from $120 to $450, covering wiring repairs or a temperature sensor replacement with labor.
No, it's low severity. It almost always reflects an electrical or sensor fault rather than a damaged catalyst, so it won't leave you stranded. It's still worth fixing so it doesn't hide other developing issues.
It means the sensor's voltage signal is reading lower than the computer expects, often from a short circuit or a failing sensor. It's about the electrical signal, not the actual exhaust temperature.