Code result
P2255
O2 Sensor Negative Current Control Circuit High
High severity
What it means
Bank 2 counterpart to P2253. The Vs negative line on bank 2, sensor 1 reads above the upper threshold.
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
Vs negative line shorted to positive
highOne of the most commonly reported causes for this code — check this first.
Internal short in sensor
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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