P2567 — Direct Ozone Reduction Catalyst Temperature Sensor Circuit #

Note: The code label may differ depending on the vehicle manufacturer (OEM).
Known variations:

• P2567 — Direct Ozone Reduction Catalyst Temperature Sensor Circuit (Generic/SAE)
• P2567 — Ozone Reduction Catalyst Temp Sensor Circuit (GM, Honda)
• P2567 — Catalyst Temperature Sensor Circuit for Direct Ozone Reduction (Toyota)
• P2567 — DOC Temperature Sensor Circuit (Ford)

Summary of Code P2567 #

The P2567 diagnostic trouble code (DTC) is triggered when the engine control module (ECM) detects an issue with the electrical circuit associated with the Direct Ozone Reduction Catalyst Temperature Sensor. This sensor monitors the temperature of a special catalyst designed to reduce ozone emissions in the vehicle’s exhaust system. When the ECM receives a signal that is out of the expected range, or no signal at all, it logs this code. Left unchecked, this problem can affect emissions performance and, in some cases, overall drivability. While not as common as other sensor codes, it demands attention to prevent potential damage to the emissions system.

Common Symptoms for Code P2567 #

When the P2567 code is present, symptoms may range from subtle to more noticeable. Some drivers may not detect any immediate changes, while others might notice specific drivability issues or be alerted by a warning light. The following symptoms are typical:

• Check Engine Light illuminated on the dashboard
• Possible reduction in engine performance or “limp mode” activation
• Failed emissions test or increased emissions output
• Decreased fuel efficiency in rare cases
• No visible drivability symptoms in some cases

Probable Causes for Code P2567 #

The causes behind code P2567 are usually electrical in nature, often relating to the sensor or its circuit. Below are the most likely culprits, ranked by how frequently they occur:

1. Faulty Direct Ozone Reduction Catalyst Temperature Sensor (internal short or open circuit)
2. Damaged or corroded wiring/connectors in the sensor harness
3. Sensor circuit open or short to ground/power
4. Faulty Engine Control Module (ECM) (rare)
5. Aftermarket modifications affecting the emissions system wiring

Step-by-Step Diagnosis for Code P2567 #

A logical approach is critical to accurately diagnosing P2567 and avoiding unnecessary part replacements. Proceed as follows:

• Verify the code using a professional-grade OBD-II scan tool and note any related codes.
• Visually inspect the Direct Ozone Reduction Catalyst Temperature Sensor and its wiring for obvious signs of damage, corrosion, or disconnection.
• Test the sensor’s resistance with a multimeter, comparing the value to OEM specifications (usually found in a service manual).
• Check for proper voltage and ground at the sensor connector with the ignition on.
• Perform a continuity test on the wiring between the sensor and the ECM to detect opens or shorts.
• If all wiring and sensor tests pass, consider re-flashing or testing the ECM as a last step.

Possible Repairs for Code P2567 #

Repairs should be based on the diagnostic findings. Here are the most common fixes related to the causes listed above:

• Replace the Direct Ozone Reduction Catalyst Temperature Sensor if it fails resistance or signal tests.
• Repair or replace damaged wiring or connectors in the sensor circuit.
• Repair any open or shorted sensor wires detected during continuity testing.
• Replace or reprogram the ECM only if all other components test good and OEM procedures confirm ECM failure.
• Remove or correct any aftermarket modifications interfering with the emissions system wiring.

Is It Safe to Drive with Code P2567? #

Limited — While you may be able to drive with the P2567 code present, it is not recommended for an extended period. The code typically signals a malfunction in your vehicle’s emissions control system, which could lead to increased emissions or, in rare cases, engine protection mode. If your check engine light is flashing, or if you notice a significant reduction in performance, have the vehicle inspected as soon as possible.

Vehicles Most Commonly Affected by Code P2567 #

P2567 is most often seen in vehicles equipped with advanced emissions control systems, especially those from manufacturers that use a Direct Ozone Reduction Catalyst. While not exclusive to any brand, it is more frequent in certain makes and models:

• Honda (Accord, CR-V, Civic — especially hybrid models)
• Toyota (Prius, Camry Hybrid, certain Lexus models)
• GM (Chevrolet Malibu, Volt, certain Buick models)
• Ford (Fusion Hybrid, Escape Hybrid)
• Other hybrid/electric vehicles with advanced exhaust after-treatment

Common Mistakes & Best Practices for Code P2567 #

Technicians and DIYers sometimes overlook key steps when addressing P2567. Avoid these pitfalls by following these best practices:

• Replacing the sensor without first checking the wiring or connectors
• Ignoring other related codes that may provide clues to the root cause
• Using a generic OBD-II scanner that cannot access specific OEM data or freeze frame information
• Neglecting to clear the code and test drive the vehicle to confirm the repair
• Skipping the basic visual inspection for obvious damage or corrosion

Express FAQ on Code P2567 #

Q: Can a faulty ozone reduction catalyst temperature sensor cause my car to fail an emissions test?
A: Yes, if the sensor is malfunctioning and the ECM cannot properly monitor the catalyst temperature, your vehicle may produce higher emissions and fail a state inspection.

Q: Is it expensive to repair a P2567 code?
A: The cost varies depending on the root cause. If it’s just the sensor or a connector, repairs are generally moderate. If the ECM is at fault, costs can be significantly higher.