Code result
P241B
O2 Sensor Signals Swapped Bank 2 Sensor 1 and Sensor 2
Moderate severity
What it means
The pre- and post-catalyst lambda signals on bank 2 are swapped - the upstream sensor responds like a downstream sensor and vice versa. Typically the harness was reversed during a sensor change.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Harness swapped during repair
highOne of the most commonly reported causes for this code — check this first.
Related help
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