P2573 Fault Code

Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Range/Performance

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

The P2573 fault code refers to an issue with the Direct Ozone Reduction Catalyst Deterioration Sensor Circuit. This code indicates that the sensor is reporting performance or range issues, which can affect the vehicle's emission control and overall performance. Proper functioning of this sensor is crucial for controlling ozone emissions effectively.

What are the symptoms of the P2573 code?

You may notice the following symptoms when the P2573 code is triggered:

• Decreased fuel efficiency.
• Increased emissions as the vehicle may fail emissions tests.
• Potential illuminations of the check engine light.
• Unusual engine performance, such as rough idling or stalling.

What causes the P2573 code?

The main causes of the P2573 fault code may include:

• A malfunctioning Direct Ozone Reduction Catalyst Deterioration Sensor.
• Wiring issues such as shorts or open circuits in the sensor's electrical connections.
• A faulty or degraded ozone reduction catalyst itself.
• Corrosion or damage to the sensor or its connectors.

How to fix P2573?

To resolve the P2573 code, consider the following steps:

• Inspect the Direct Ozone Reduction Catalyst Deterioration Sensor and its wiring for damage or loose connections.
• Replace the faulty sensor if it is not functioning correctly.
• Check for any issues with the ozone reduction catalyst and replace it if necessary.
• Ensure that all electrical connections are clean and secure to avoid any further issues.