Code result
P2207
NOx Sensor Circuit Range/Performance
High severity
What it means
The bank 2 NOx sensor returns values outside the expected range for the operating point — for example a non-zero reading at engine off or unchanged values during load changes.
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
Sensor drift due to ageing
highOne of the most commonly reported causes for this code — check this first.
Sensor contaminated with soot or condensate
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P2207 freeNo credit card required