Code result
P2240
O2 Sensor Pumping Current Circuit
High severity
What it means
Bank 2 counterpart of P2237. The wide-band lambda sensor on bank 2 sensor 1 cannot operate its pumping current circuit.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Pumping current line open on bank 2
highOne of the most commonly reported causes for this code — check this first.
Bank 2 wide-band sensor failed
mediumA plausible cause — test and verify before replacing parts.
Related help
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