Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P2568 OBD-II Trouble Code: Direct O-Zone Reduction Catalyst Temperature Sensor Circuit Range/Performance

P2568 OBD-II Trouble Code: Direct O-Zone Reduction Catalyst Temperature Sensor Circuit Range/Performance

Check Engine Light

P2568 code definition

Direct O-zone Reduction Catalyst Temperature Sensor Circuit Range/Performance

What the P2568 code means

P2568 is an OBD-II generic code that the engine control module (ECM) has detected the engine o-zone reduction catalyst temperature sensor to be out of specification range or performance has gone out of specification parameters.

What causes the P2568 code?

  • The ECM monitors the catalyst temperature with a sensor mounted in the exhaust after the catalyst.
  • The catalyst temperature sensor is inoperative or is slow in response to exhaust temperature.
  • The exhaust may have air leaks into the exhaust before the sensor causing incorrect operation.

What are the symptoms of the P2568 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory.
  • The engine may have an exhaust leak.
  • The sensor may not cause any drive complaints.

How does a mechanic diagnose the P2568 code?

  • Scans codes and documents the freeze frame data in order to verify the problem

  • Clears the engine codes and road tests the vehicle to verify concern comes back

  • Monitors the sensor PID on a scanner to see if sensor indicates the proper temperature of the exhaust as per specifications

  • Checks the sensor for damage to the sensor or wiring

Common mistakes when diagnosing the P2568 code?

  • Failing to repair any exhaust leaks or damage causing the sensor performance to be out of specifications

  • Failing to check the wiring harness and connection to the sensor for problems before replacing the sensor or catalyst

How serious is the P2568 code?

  • The Check Engine Light being on causes the vehicle to fail emission testing.

  • The sensor system for the catalyst temperature is important to keep from overheating the catalyst and causing damage to the catalyst.

What repairs can fix the P2568 code?

  • Replacing the o-zone reduction catalyst temperature sensor
  • Replacing the catalyst if damaged from over temperature conditions
  • Repairing the wiring shorted or open to the sensor or connector

Additional comments for consideration regarding the P2568 code

Code P2568 is triggered when the catalyst temperature sensor is out of specifications and can cause the catalyst to be overheated and damaged. When repairing the temperature sensor, check the catalyst for damage from overheating by looking at the catalyst housing for large discoloration or heat damage.

Need help with a P2568 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: I am getting the P200A check engine light

The trouble code that you have listed is associated with a known problem for the intake manifold runner control system. There are some 2011 and 2012 model year vehicles that have a current recall to have the control module reprogrammed...

Q: Would the Weight Classification System sensor cause the ESC light to come on

The code for the passenger seat weight sensor issue will not cause the loss of power in the engine. You will need to have the airbag code diagnosed separately. If you have aftermarket devices hooked to the computer data link...

Q: Check engine light came on, diagnostic was done and came up with codes saying pressure control solenoid 2,3, & 5 are shut off.

Low transmission fluid is a major cause of transmission failures. Your pressure control solenoids turned off to try to prevent damage to transmission components like clutches etc. Unfortunately, the damage is done and changing the fluid will not help, and...