Severity: Fix soon. Usually safe to drive for now.
The computer is getting no usable signal from the oxygen sensor behind the catalytic converter on bank 1, the sensor that watches how well the converter is working.
Check the wiring and exhaust for leaks, then replace the sensor if it gives no signal.
Safe to drive. This sensor monitors emissions, not how the engine runs.
Generally safe to drive, but get it checked soon. Safe to drive. This sensor monitors emissions, not how the engine runs.
The most common causes are: Failed oxygen sensor; Damaged wiring or connector; Exhaust leak; Blown heater fuse. A scan tool and a visual check of the parts above is where a technician starts.
Check the wiring and exhaust for leaks, then replace the sensor if it gives no signal.
