The P2217: NOx Sensor Circuit Intermittent Bank 2 refers to an issue where the NOx sensor circuit in bank 2 is sending intermittent or unstable signals. This can be caused by a faulty sensor, wiring issues, or connector problems, leading to irregular NOx readings.
P2217 – Quick Overview
Code | Information |
---|---|
Meaning | P2217: NOx Sensor Circuit Intermittent Bank 2 |
Is it serious? | Yes, an intermittent signal can cause inaccurate NOx readings, leading to improper emissions control and poor engine performance. |
Possible causes | – Intermittent signal in NOx sensor circuit in bank 2 – Faulty sensor or wiring issues – Connector problems |
How to diagnose? | – Test the NOx sensor circuit in bank 2 for intermittent signals – Inspect wiring and connectors for reliability – Check for any mechanical issues affecting sensor operation |
P2217 Meaning
The P2217: NOx Sensor Circuit Intermittent Bank 2 code indicates that the engine control module (ECM) has detected an unstable or intermittent signal from the NOx sensor circuit in bank 2 (the side of the engine that does not contain cylinder 1). The NOx sensor measures nitrogen oxide levels in the exhaust gases to help manage emissions. An intermittent signal may cause inaccurate NOx readings, leading to poor emissions performance and potentially failing emissions tests.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for any additional related codes that may provide more insight into the NOx sensor circuit issue. | OBD-II Scanner |
Test NOx Sensor Circuit for Intermittent Signals | Use a multimeter or diagnostic tool to monitor the NOx sensor circuit in bank 2 for intermittent or unstable signals. Compare the readings to manufacturer specifications. | Multimeter, Diagnostic Tool |
Inspect Wiring and Connectors | Visually inspect the wiring and connectors leading to the NOx sensor in bank 2. Look for damaged wires, loose connections, or corrosion that could cause unstable signals. | Flashlight, Safety Gloves |
Check for Mechanical Issues | Inspect the NOx sensor for any mechanical problems such as improper mounting, sensor damage, or exhaust leaks that could affect sensor performance. | Flashlight, Wrenches |
Test Sensor Circuit Continuity | Use a multimeter to test for continuity in the NOx sensor circuit. Intermittent signals can result from high resistance or breaks in the wiring. | Multimeter, Wiring Diagram |
Repair or Replace Faulty Components | If any faulty wiring, connectors, or NOx sensor issues are found, repair or replace them to restore proper sensor operation. | Replacement Parts, Tools |
Clear the Code and Test Drive | After repairs, clear the P2217 code using an OBD-II scanner and take the vehicle for a test drive to ensure the issue is resolved. | OBD-II Scanner |
Recheck for Codes | After the test drive, re-scan the vehicle to confirm that the P2217 code does not return. | OBD-II Scanner |

OBD-II scanner Buyer’s Guide
- Scanner features explained
- Different types of scanners
- Scanners for coding/odometer/ECU/checks
- Best picks + discount codes

Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)