Code result
P2238
O2 Sensor Pumping Current Circuit Low
High severity
What it means
Pumping current at the bank 1 sensor 1 wide-band lambda probe is below the lower limit — short to ground or sensor at end of life.
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
Pump line shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Wide-band sensor aged
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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