P2574 — Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low

What Does P2574 Mean?

P2574 is a diagnostic trouble code indicating: Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2574

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

Frequently Asked Questions

What does P2574 mean?

P2574 indicates: Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low. The vehicle's computer has detected that the Direct Ozone Reduction Catalyst Deterioration Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2574?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2574 for extended periods may cause additional problems.

How much does it cost to fix P2574?

Repair costs for P2574 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 Direct Ozone Reduction Catalyst Deterioration Sensor circuit
🔧 Clean and secure Direct Ozone Reduction Catalyst Deterioration Sensor connector and ground points
🔧 Replace failed Direct Ozone Reduction Catalyst Deterioration Sensor

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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.

P2574: Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low