OBD-II code · Powertrain (generic, extended)
P2210 NOx Sensor Circuit Intermittent (Bank 2)
The bank 2 NOx sensor reports correctly some of the time but intermittently drops out. Often a marginal connector, a wiring chafe or a sensor that fails when warm.
Is it safe to drive with P2210?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyConnector intermittent
- PossibleSensor fails when hot
- Less likelyHarness routed against vibrating component
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, Nox Sensor Wiring
Related codes
- P2204NOx Sensor Circuit Intermittent (Bank 1)
- P2206NOx Sensor Circuit (Bank 2)
- P2217NOx Sensor Circuit Intermittent (Bank 2)
- P220DNOx Sensor Supply Voltage Circuit (Bank 2 Sensor 2)
- P220ENOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 1)
- P220FNOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 2)
- P2211NOx Sensor Heater Sense Circuit Intermittent (Bank 2)
- P2212NOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 1)
- P2213NOx Sensor Circuit (Bank 2)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.