OBD-II code · Powertrain (generic, extended)
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.
Is it safe to drive with P2207?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor drift due to ageing
- PossibleSensor contaminated with soot or condensate
- Less likelySensor element aged beyond calibration window
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)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Nox Sensor B2
Related codes
- P2206NOx Sensor Circuit (Bank 2)
- P2214NOx Sensor Circuit Range/Performance (Bank 2)
- P2204NOx Sensor Circuit Intermittent (Bank 1)
- P2205NOx Sensor Heater Control Circuit (Bank 1)
- P2208NOx Sensor Heater Circuit (Bank 2)
- P2209NOx Sensor Heater Sense Circuit Range/Performance (Bank 2)
- P220ANOx Sensor Supply Voltage Circuit (Bank 1 Sensor 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.