P2225 — NOx Sensor Heater Sense Circuit Intermittent Bank 2

What Does P2225 Mean?

P2225 is a diagnostic trouble code indicating: NOx Sensor Heater Sense Circuit Intermittent 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 P2225

⚠️ Check Engine Light (MIL) illuminated
⚠️ NOx Sensor Heater Sense signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Reduced engine performance

Common Causes

🔍 Loose or intermittent connection at NOx Sensor Heater Sense
🔍 Wire chafing causing intermittent contact
🔍 NOx Sensor Heater Sense failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P2225 mean?

P2225 indicates: NOx Sensor Heater Sense Circuit Intermittent 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 P2225?

Yes, P2225 is generally safe to drive with in the short term. However, it should still be addressed to pass emissions testing and prevent potential secondary issues.

How much does it cost to fix P2225?

Repair costs for P2225 typically range from $30 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 reseat all NOx Sensor Heater Sense connectors
🔧 Repair chafed or damaged wiring in NOx Sensor Heater Sense circuit
🔧 Replace NOx Sensor Heater Sense if failing intermittently

1
Find your vehicle above
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2
Check for recalls
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2225: NOx Sensor Heater Sense Circuit Intermittent Bank 2