P2574 Fault Code

Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low

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

The P2574 fault code indicates that there is low voltage or poor performance in the Direct Ozone Reduction Catalyst Deterioration Sensor Circuit. This sensor is crucial for monitoring the efficiency of the ozone reduction catalyst, which plays a role in reducing harmful emissions from the vehicle's exhaust system. When this circuit is malfunctioning, it may lead to increased emissions and a failure to meet environmental regulations.

What are the symptoms of the P2574 code?

Symptoms associated with a P2574 code may include:

• Illuminated check engine light.
• Increased exhaust emissions.
• Poor vehicle performance or reduced efficiency.
• Possible failure in emissions testing.

What causes the P2574 code?

Several factors can trigger the P2574 fault code, including:

• A faulty ozone reduction catalyst deterioration sensor.
• Damaged wiring or connectors in the sensor circuit.
• Poor ground connections or electrical issues.
• Contamination or obstruction in the catalyst itself.

How to fix P2574?

To address the P2574 fault code, consider the following steps:

• Inspect the ozone reduction catalyst deterioration sensor and its connections for damage or corrosion.
• Check the wiring for shorts, breaks, or poor connections.
• Test the sensor for proper voltage and functionality.
• If necessary, replace the sensor or repair any damaged wiring.
• Clear the fault code and monitor for reoccurrence.