P2223 — NOx Sensor Heater Sense Circuit Low Bank 2

What Does P2223 Mean?

P2223 is a diagnostic trouble code indicating: NOx Sensor Heater Sense Circuit Low Bank 2. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2223

⚠️ Check Engine Light (MIL) illuminated
⚠️ NOx Sensor Heater Sense reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Open or broken wire in NOx Sensor Heater Sense circuit
🔍 Poor ground connection at NOx Sensor Heater Sense
🔍 Faulty NOx Sensor Heater Sense with no output signal
🔍 Disconnected or loose NOx Sensor Heater Sense connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P2223 mean?

P2223 indicates: NOx Sensor Heater Sense Circuit Low Bank 2. The vehicle's computer has detected that the NOx Sensor Heater Sense is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2223?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2223 for extended periods may cause additional problems.

How much does it cost to fix P2223?

Repair costs for P2223 typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Repair broken wire or restore ground in NOx Sensor Heater Sense circuit
🔧 Clean and secure NOx Sensor Heater Sense connector and ground points
🔧 Replace failed NOx Sensor Heater Sense

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2223: NOx Sensor Heater Sense Circuit Low Bank 2