P2219 — NOx Sensor Heater Control Circuit Low Bank 2

What Does P2219 Mean?

P2219 is a diagnostic trouble code indicating: NOx Sensor Heater Control 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 P2219

⚠️ Check Engine Light (MIL) illuminated
⚠️ NOx Sensor Heater 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 circuit
🔍 Poor ground connection at NOx Sensor Heater
🔍 Faulty NOx Sensor Heater with no output signal
🔍 Disconnected or loose NOx Sensor Heater connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P2219 mean?

P2219 indicates: NOx Sensor Heater Control Circuit Low Bank 2. The vehicle's computer has detected that the NOx Sensor Heater is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2219?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2219 for extended periods may cause additional problems.

How much does it cost to fix P2219?

Repair costs for P2219 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 circuit
🔧 Clean and secure NOx Sensor Heater connector and ground points
🔧 Replace failed NOx Sensor Heater

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.

P2219: NOx Sensor Heater Control Circuit Low Bank 2