P2567: Direct Ozone Reduction Catalyst Temperature Sensor Circuit Malfunction
The P2567 code indicates a problem in the circuit of the Direct Ozone Reduction (DOR) catalyst temperature sensor. This sensor monitors the temperature of the DOR catalyst, which is part of the emissions system designed to reduce ozone-forming pollutants. The Powertrain Control Module (PCM) detects a voltage or resistance signal from the sensor that is outside the expected range, or the circuit is open or shorted. This can lead to improper catalyst monitoring and may affect emission control system performance.
01. Most Common Causes
- Faulty DOR catalyst temperature sensor
- Open or shorted wiring in the sensor circuit
- Poor electrical connection at the sensor or PCM
- Corroded or damaged connector pins
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Failed emissions test
- Possible decrease in fuel economy
- No noticeable drivability issues in most cases
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional related codes.
Step 2: Visually inspect the DOR temperature sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor's resistance and compare to manufacturer specifications; replace if out of range.
Step 4: Check for continuity and shorts in the wiring between the sensor and PCM; repair as needed.
Step 5: If all else is fine, consider a PCM software update or replacement as a last resort.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, it is generally safe to drive, but the vehicle may fail an emissions test and the Check Engine Light will remain on. It is recommended to diagnose and repair the issue to ensure proper emission control.
How much does it cost to fix?▼
The cost typically ranges from $150 to $300, including parts and labor. The sensor itself costs around $50-$100, and labor adds $100-$200 depending on the vehicle and shop rates.