Code result
P2205
NOx Sensor Heater Control Circuit
High severity
What it means
The heater inside the bank 1 NOx sensor cannot be controlled — open, short, or failed driver. Without proper heater operation the sensor never reaches its operating temperature and reports invalid data.
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
Heater element open
highOne of the most commonly reported causes for this code — check this first.
Heater short to supply or ground
mediumA plausible cause — test and verify before replacing parts.
Related help
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