The P2216: NOx Sensor Circuit High Bank 2 refers to a condition where the voltage in the NOx sensor circuit for bank 2 is higher than expected. This can be caused by a faulty NOx sensor, wiring issues, or connector problems, resulting in excessive voltage being sent to or from the sensor.
P2216 – Quick Overview
Code | Information |
---|---|
Meaning | P2216: NOx Sensor Circuit High Bank 2 |
Is it serious? | Yes, high voltage can cause the NOx sensor to malfunction, leading to inaccurate emissions readings and poor engine performance. |
Possible causes | – High voltage in NOx sensor circuit in bank 2 – Faulty sensor or wiring issues – Connector problems |
How to diagnose? | – Measure voltage in the NOx sensor circuit in bank 2 – Test the NOx sensor for faults – Inspect wiring and connectors for issues |
P2216 Meaning
The P2216: NOx Sensor Circuit High Bank 2 code indicates that the engine control module (ECM) has detected higher-than-expected voltage in the NOx sensor circuit for bank 2 (the side of the engine not containing cylinder 1). The NOx sensor measures nitrogen oxide levels in the exhaust gases to manage emissions. High voltage in this circuit can lead to sensor malfunctions, resulting in inaccurate NOx readings and poor engine performance.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for additional related codes that might provide further insight into the NOx sensor issue. | OBD-II Scanner |
Measure Voltage in NOx Sensor Circuit | Use a multimeter to measure the voltage in the NOx sensor circuit in bank 2. Verify that the voltage is within manufacturer specifications and not excessively high. | Multimeter, Vehicle Manual |
Test the NOx Sensor | Use a diagnostic tool or multimeter to test the NOx sensor itself. Ensure that it is functioning properly and providing accurate readings based on manufacturer specifications. | Multimeter, Diagnostic Tool |
Inspect Wiring and Connectors | Visually inspect the wiring and connectors associated with the NOx sensor in bank 2. Look for signs of corrosion, damaged wires, or loose connections that could cause high voltage. | Flashlight, Safety Gloves |
Check Circuit Continuity | Test for continuity in the NOx sensor circuit to ensure proper current flow. High voltage could result from resistance or wiring issues. | Multimeter, Wiring Diagram |
Repair or Replace Faulty Components | If faulty wiring, connectors, or the NOx sensor itself is found, repair or replace them to restore proper voltage and functionality. | Replacement Parts, Tools |
Clear the Code and Test Drive | After repairs, clear the P2216 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 P2216 code does not return. | OBD-II Scanner |

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