P2210NOx Sensor Heater Sense Circuit Low (Bank 1 Sensor 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2210 means the heater feedback signal of the upstream NOx sensor on bank 1 sits below its permitted range. Typical electrical causes are a short to ground in the sense line or a failed measuring stage in the sensor electronics. GM lists the code as NOx Sensor Heater Feedback Circuit Low for the 2024 Silverado/Sierra 3.0L diesel (LZ0). CARB requires the OBD system to detect heater circuit faults that conflict with the commanded state. P2211 is the opposite direction, P2208 the general sense-circuit fault, P2209 a plausible but poor heating result, and P2206 a low reading on the control side. The sensor then delivers no usable NOx value; the MIL comes on.
- What you may notice
- Malfunction indicator lamp on
- No NOx reading in live data
- Likely causes
- LikelyFault in the sensor element or its control unit
- PossibleSense line shorted to ground
- RareCorrosion in the connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €250 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.