Severity: Fix soon. Usually safe to drive for now.
The oxygen sensor behind the catalytic converter on bank 1 is stuck at a high voltage, which usually points to a failing sensor or a converter problem.
Test the sensor first, then check the catalytic converter's condition.
Safe to drive, but have the converter checked — a high reading here can mean it is no longer working.
Generally safe to drive, but get it checked soon. Safe to drive, but have the converter checked — a high reading here can mean it is no longer working.
The most common causes are: Failed oxygen sensor; Failing catalytic converter; Wiring short to power; Fuel contamination in the exhaust. A scan tool and a visual check of the parts above is where a technician starts.
Test the sensor first, then check the catalytic converter's condition.
