P2224 — NOx Sensor Heater Sense Circuit High Bank 2

What Does P2224 Mean?

P2224 is a diagnostic trouble code indicating: NOx Sensor Heater Sense Circuit High 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 P2224

⚠️ Check Engine Light (MIL) illuminated
⚠️ NOx Sensor Heater Sense reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in NOx Sensor Heater Sense wiring harness
🔍 Corroded or water-damaged NOx Sensor Heater Sense connector
🔍 Faulty NOx Sensor Heater Sense outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P2224 mean?

P2224 indicates: NOx Sensor Heater Sense Circuit High 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 P2224?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2224 for extended periods may cause additional problems.

How much does it cost to fix P2224?

Repair costs for P2224 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

🔧 Inspect and repair NOx Sensor Heater Sense wiring for short to voltage
🔧 Clean or replace corroded NOx Sensor Heater Sense connector
🔧 Replace faulty 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.

P2224: NOx Sensor Heater Sense Circuit High Bank 2