NOx Sensor Circuit Bank 2 Malfunction
The P2213 code indicates a fault in the nitrogen oxide (NOx) sensor circuit for Bank 2. This sensor monitors NOx levels in the exhaust to optimize diesel or lean-burn engine performance and emissions. The circuit includes the sensor, wiring, and the engine control module (ECM). A failure can cause increased emissions, reduced fuel economy, and potential drivability issues.
01. Most Common Causes
- Faulty NOx sensor Bank 2
- Open or shorted wiring in the sensor circuit
- Corroded or loose connector
- Failed ECM (rare)
02. Symptoms You Will Notice
- Check Engine Light on
- Failed emissions test
- Reduced fuel economy
- Possible limp mode or reduced engine power
03. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P2213 is present.
Step 2: Inspect the NOx sensor connector and wiring for damage or corrosion.
Step 3: Test the sensor's heater and signal circuits with a multimeter per manufacturer specs.
Step 4: Replace the NOx sensor if circuit tests are normal but sensor fails to respond.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
You can drive short distances, but prolonged driving may cause reduced performance and increased emissions. It's best to repair promptly.
How much does it cost to fix?▼
Typically $200-$600 including parts and labor, depending on vehicle and sensor location.