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 an abnormal voltage or signal from the sensor, often due to an open, short, or faulty sensor. This can affect the catalyst's efficiency and may lead to increased emissions.
1. Most Common Causes
- Faulty DORC catalyst temperature sensor
- Corroded, disconnected, or damaged wiring or connectors in the sensor circuit
- Short to ground or voltage in the sensor wiring
- Open circuit in the temperature sensor harness
- Internal PCM failure (less common)
- Poor ground in the sensor circuit
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Possible failed emissions test
- Reduced fuel economy (in some cases)
- No noticeable drivability issues in most cases
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other 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 the circuit for continuity and shorts using a multimeter; repair wiring as needed.
Step 5: Clear the code and test drive to see if it returns; if persistent, replace the sensor.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, it is generally safe to drive short distances, but the vehicle may fail an emissions test. Prolonged driving could potentially damage the catalyst if the sensor is not functioning correctly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for a DIY sensor replacement, including the part. Professional labor may add $50-$100, totaling $100-$250.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.