OBD-II code · Powertrain (generic, extended)
P2217 NOx Sensor Circuit Intermittent (Bank 2)
NOx Sensor Circuit Intermittent (Bank 2): the signal is intermittent or erratic. Often a loose connector or chafed wiring; a wiggle test often locates it.
Is it safe to drive with P2217?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyIntermittent connector
- Less likelyConnector with intermittent contact under vibration
- 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
- Best left to a mechanic
- Typical labour
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Nox Sensor
Related codes
- P2204NOx Sensor Circuit Intermittent (Bank 1)
- P2210NOx Sensor Circuit Intermittent (Bank 2)
- P2213NOx Sensor Circuit (Bank 2)
- P2214NOx Sensor Circuit Range/Performance (Bank 2)
- P2215NOx Sensor Circuit Low (Bank 2)
- P2216NOx Sensor Circuit High (Bank 2)
- P2218NOx Sensor Heater Control Circuit/Open (Bank 2)
- P2219NOx Sensor Heater Control Circuit Low (Bank 2)
- P221ANOx Sensor 1/2 Correlation (Bank 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.