P2217NOx Sensor Circuit Intermittent (Bank 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2217 describes a bank 2 NOx sensor whose measuring path fails only now and then: the reading drops out or the sensor briefly reports an electrical error, then recovers. A smart NOx sensor evaluates its own probe lines and sends status flags for open or shorted circuits alongside the value over CAN; flags that toggle point to this code rather than to the steady fault P2213. No manufacturer documents P2217, nor its bank 1 twin P2204, with thresholds, so the debounce logic is calibration-specific; CARB generally requires continuous detection of NOx sensor continuity faults. Typical causes are a loose terminal, a lead that cracks when hot, or water entering the connector. The warning lamp may come and go.
- What you may notice
- Malfunction indicator lamp that comes and goes
- Bank 2 NOx value briefly invalid in live data
- Likely causes
- LikelyLoose or corroded terminals at the bank 2 sensor connector
- PossibleLead near the exhaust cracked by heat or vibration
- RareSporadic fault in the sensor module electronics
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.