P2572 Fault Code

Direct Ozone Reduction Catalyst Deterioration Sensor Circuit

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2572 fault code indicates a problem with the Direct Ozone Reduction Catalyst Deterioration Sensor Circuit. This sensor monitors the performance and effectiveness of the ozone reduction catalyst in your vehicle's emission control system. When the circuit is not functioning properly, it may lead to increased emissions and reduced engine performance.

• Proper diagnosis is essential to pinpoint the exact nature of the failure.
• Ensuring that the circuit and sensor are inspected is critical for maintaining emissions compliance.

What are the symptoms of the P2572 code?

You may experience symptoms such as:

• Illuminated check engine light (CEL) on the dashboard.
• Decreased engine performance or reduced fuel efficiency.
• Increased emissions, leading to potential failing an emissions test.
• Possible rough idle or hesitation during acceleration.

What causes the P2572 code?

Common causes for the P2572 code include:

• A damaged or shorted Direct Ozone Reduction Catalyst Deterioration Sensor.
• Wiring issues such as open circuits or poor connections in the sensor circuit.
• Faulty engine control module (ECM) or powertrain control module (PCM).
• Environmental factors causing sensor degradation.

How to fix P2572?

To address the P2572 fault code, the following steps should be taken:

• Begin with a thorough inspection of the Direct Ozone Reduction Catalyst Deterioration Sensor and its wiring.
• Replace any damaged connectors or wires that may be causing the issue.
• If the sensor itself is faulty, replace it with a new component.
• Clear the fault codes and test drive the vehicle to ensure that the issue has been resolved.
• If the problem persists, further diagnostics on the ECM/PCM may be required.