What Does P2572 Mean?
The PCM has detected a fault in the deterioration sensor circuit that monitors the Direct Ozone Reduction catalyst condition. This is a general circuit malfunction code indicating the sensor system is not functioning properly.
Common Causes
40%
Failed deterioration sensor in ozone catalyst
30%
Open or short circuit in sensor wiring harness
20%
Corroded or damaged sensor connector
10%
PCM internal fault in sensor input circuit
Diagnostic Steps
1
Step 1: Inspect sensor connector for corrosion, bent pins, or moisture intrusion
2
Step 2: Check sensor power supply voltage (typically 5V reference) and ground circuit continuity
3
Step 3: Measure sensor resistance and compare to manufacturer specifications
4
Step 4: Test wiring harness continuity between sensor and PCM for all circuits
5
Step 5: If all circuits test normal, perform sensor output voltage test under operating conditions
Estimated Repair Cost
$200 - $600
Parts + labor, varies by vehicle and location
The PCM has detected a fault in the deterioration sensor circuit that monitors the Direct Ozone Reduction catalyst condition. This is a general circuit malfunction code indicating the sensor system is not functioning properly.
The most common cause of P2572 (Direct Ozone Reduction Catalyst Deterioration Sensor Circuit) is: Failed deterioration sensor in ozone catalyst
Typical repair costs for P2572 range from $200 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive but should be diagnosed soon. May cause emissions test failure and reduced catalyst monitoring capability.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2572 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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