Powertrain
generic / SAE
P2207
NOx Sensor Circuit Range/Performance (Bank 2)
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / 07
Possible causes
- Sensor drift due to ageing high
- Sensor contaminated with soot or condensate medium
- Sensor element aged beyond calibration window low
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 300–1000 €
- Estimated time: 0.5–2 h
- Component: nox sensor b2
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012