Skip the auto shop - Our mechanics make house calls

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...
P0121 OBD-II Trouble Code: TPS "A" Circuit Range Performance Problem
P0121 code definition Throttle Pedal Position Sensor/Switch (TPS) A Circuit Range Performance Problem...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...


Related questions

Q: I changed spark plugs and wires & cleaned throttle body, car idles rough and gas mileage is changed does not backfire or anything

A few different components could be causing your issue. Your symptoms sound at first like a spark issue. If a plug was tightened down too hard, the gap can become smaller than intended. This would decrease the power of the...

Q: I have a check engine light and a trac off light on and the cruis control does not work

The dealer will not try and do any repairs unless they can verify and duplicate the problem. If they cleared the codes and then cannot verify the problem and light coming back on then they are not going to do...

Q: My vehicle runs or idles rough. I was told that is normal, is it? And what are the signs of the transmission going out?

With a vehicle as new as yours, the likelihood of a transmission issue would be fairly slim unless damage has been done. The clanking and the rough idle may be the cause of the jerking motion. You should turn your...