The NOx sensor is alive but its readings do not make sense against the rest of the emissions data.
P2202 — also written P22O2, P 2202, 2202 — is the OBD-II code for nox sensor circuit range/performance (bank 1). Same code, same fix: this page covers every spelling of it.
P2202 is a emissions fault code, typically costing £250–£1000 to put right in a UK garage.
What causes P2202?
- Aged or contaminated NOx sensor
- AdBlue dosing fault
- Exhaust leak upstream of the sensor
- Underlying EGR fault
How P2202 is fixed
- Check for exhaust leaks first
- Verify AdBlue dosing and quality
- Replace and code the NOx sensor
P2202 repair cost in the UK
Most P2202 repairs land between £250–£1000 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Can you drive with P2202?
Yes, with reduced power on some models.
Urgency: medium.