What Does P2216 Mean?
The NOx sensor signal voltage on Bank 2 is above the maximum threshold. This suggests a short to voltage, open sensor ground, or internal sensor failure causing high voltage readings.
Common Causes
35%
Short to voltage in NOx sensor signal circuit
30%
Failed NOx sensor with internal component failure
20%
Open or poor ground connection at sensor
10%
Damaged wiring harness with exposed wires
5%
ECM internal circuit malfunction
Diagnostic Steps
1
Step 1: Inspect NOx sensor wiring and connector for damage or signs of shorting to power
2
Step 2: Disconnect sensor and measure voltage on signal wire; should be close to 0V with key on
3
Step 3: Check sensor ground circuit continuity and resistance to chassis ground
4
Step 4: Inspect wiring harness routing for areas where wires may contact voltage sources
5
Step 5: Replace NOx sensor if all circuit tests pass specifications
Estimated Repair Cost
$300 - $1,300
Parts + labor, varies by vehicle and location
The NOx sensor signal voltage on Bank 2 is above the maximum threshold. This suggests a short to voltage, open sensor ground, or internal sensor failure causing high voltage readings.
The most common cause of P2216 (NOx Sensor Circuit High Bank 2) is: Short to voltage in NOx sensor signal circuit
Typical repair costs for P2216 range from $300 to $1,300, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to operate but may trigger limp mode and reduced performance. Prolonged operation risks SCR system and catalytic converter damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2216 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
