Code result
P2211
NOx Sensor Heater Sense Circuit Intermittent
High severity
What it means
The heater sense line on the bank 2 NOx sensor produces intermittent readings. Often a thermal fault inside the sensor or a connector under temperature cycling.
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
Connector intermittent under temperature
highOne of the most commonly reported causes for this code — check this first.
Sensor heater intermittent when hot
mediumA plausible cause — test and verify before replacing parts.
Harness routed against vibrating component
lowLess common, but worth ruling out after the more likely causes.
Related help
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