Error Code P2571: What It Means & What To Do?

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The trouble code P2571 can be explained as Direct Ozone Reduction Catalyst Temperature Sensor Circuit Intermittent/Erratic. This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

If the engine control module would detect a variation in the voltage coming from the direct ozone reduction catalyst temperature sensor circuit that is outside the parameters set by the automobile manufacturer, then it would store the P2571 error code. This would also give rise to the illumination of the check engine light.

What causes this problem with the Direct Ozone Reduction Catalyst Temperature Sensor Circuit Intermittent/Erratic?

• Some issues related to the direct ozone reduction catalyst temperature sensor
• Unlocked direct ozone reduction catalyst temperature sensor harness
• Unsatisfactory electrical connection in the direct ozone reduction catalyst temperature sensor circuit

1. Engine Control Module - If there is any corrosion or breaks in the internal wiring of the harness, then it can cause a short in the ECM or can also cause corrosion in the ECM through the wiring harness. You can always rely on us as we have best auto parts for our customers.
2. Oxygen Sensor - The O2 sensor can also be at fault leading to lean or rich engine conditions and thus affecting the engine performance and improper fuel consumption. Buy new sensor and replace the faulty one now!
3. Powertrain Control Module - The on-board computer, or powertrain control module is the brain of the engine control system. Now if the brain is not working properly, then neither is the car engine. Get it replaced before the situation gets worse.
4. Electronic Control Unit - Is your car jumpstarting on reverse polarity? Or are you facing some intermittent starting issues? If yes, then it indicates that your electronic control unit is bad. So it is very important to replace the defective electronic control unit with us at equitable prices.
5. Exhaust System Parts - The exhaust system parts play the essential role of withstanding all the heat and high stress of the engine’s exhaust. So they are prone to easy corrosion. A corrosion in any of these parts can lead to a fire in all the exhaust parts in the system. We recommend you to change or replace them just in time before it's too late.
6. Diagnostic Tools - Buy quality diagnostic tools to check and diagnose OBD code P2571 error with the help of experienced mechanic. Visit us today! 

There could be countless symptoms which that would accompany with this fault code. Willing to know some common symptoms of OBD Trouble Code P2571? Your wish is our demand. Have a look at them below:

Common Symptoms

• Check engine light might come into signal
• Car engine stalling
• There might be some drivability problems
• Lack in engine performance
• Some hissing sounds might start coming while accelerating

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• You must fix the defective direct ozone reduction catalyst temperature sensor
• Repair or replace the quirky oxygen sensor
• Make sure to mend the faulty direct ozone reduction catalyst temperature sensor harness
• It is essential to restore the flawed direct ozone reduction catalyst temperature sensor circuit
• Rehabilitate the leakages in the exhaust system
• Carefully adjust the faults in the catalytic converter 

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of pcm, ecm, reduction catalyst temperature sensor, radiator, digital volt, ohmmeter, oxygen sensor, EAC sensor, mass air flow sensor, exhaust temperature sensor and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2571 code to be stored:

The mechanic or the technician will use a diagnostic scanner or code reader like DVOM to visually scan for the error codes in the vehicle. The direct ozone reduction catalyst is utilized exclusively to reduce exhaust emissions in gasoline burning vehicles with internal combustion engines. The direct ozone reduction catalyst is an in line device which would resemble a muffler or resonator in exterior appearance although it differs greatly from either internally. The direct ozone reduction catalyst would get hotter than a muffler when the engine is running and especially immediately after the vehicle has been driven. Retarded ignition timing, lean fuel conditions, and misfires in the engine can rise direct ozone reduction catalyst temperatures to dangerous levels. There might be some cases where the direct ozone reduction catalyst will reach temperatures that cause it to become "red hot" and present a high risk from fire if flammable liquids are leaked or spilled thereon. The direct ozone reduction catalyst will utilize a system of interwoven fibres which contain a high concentrate of platinum packed tightly into the metal housing to restrict and filter excessive noxious oxide fragments. The noxious oxide fragments are then incinerated by the extreme temperatures (500 to 800-degrees Fahrenheit) found inside of the direct ozone reduction catalyst. Before you start with your process of diagnosis, verify that the direct ozone reduction catalyst is not under a manufacturer's warranty. Direct ozone reduction catalyst devices typically carry a 100,000-mile federally mandated warranty, regardless of vehicle year model. If the direct ozone reduction catalyst device is not under warranty, then you should start checking for leakages in the auto exhaust system. If exhaust leaks are detected (particularly before the catalytic converter), then they should be repaired as per the requirement, reset the code, and then the entire system should be retested. A lot of tools would be required to successfully diagnose this code if no exhaust leaks are detected. A suitable scanner, a digital volt/ohmmeter, and a temperature gun would be needed to perform a thorough diagnosis. After that start with the visual inspection of all wiring as well as connectors. Repair or restore damaged, disconnected, shorted, or corroded wiring, connectors, as well as other components as per the need. Make sure to retest the system once the repairs are completed to ensure success. If all system wiring, connectors, and components appear to be in good working order, then you should connect the scanner to the diagnostic connector and carefully record all stored codes as well as freeze frame data. This information might prove to be very helpful in diagnosing intermittent conditions that may have contributed to this code being stored. The code should then be cleared up and then the vehicle should be operated to see if it returns. This will help to decide whether or not the malfunction is intermittent. Once the codes have been cleared, tests drive the vehicle to see if the code returns. If the code has failed to return immediately, you may have an intermittent condition. Intermittent conditions can be quite challenging to diagnose and in extreme cases they should be allowed to worsen before a correct diagnosis can be made. Proceed by raising the vehicle and pointing the temperature gun at the exhaust pipe before and after the direct ozone reduction catalyst device. Then compare your findings with manufacturer's specifications. If your findings do not coincide with what the manufacturer recommends, then there are some faults in the direct ozone reduction catalyst device or temperature sensor. If your findings are in line with the manufacturer's specifications, then use the scanner and oscilloscope to monitor upstream and downstream oxygen sensor operation on the affected engine bank. Start your car engine, test drive the vehicle, then park it and then the car engine should be allowed to stay idle. Once the car engine has reached normal operating temperature and the engine control system has entered closed loop operation, the upstream sensor should fluctuate rapidly from lean to rich (approximately .350 to .900 volts). The downstream oxygen sensor should find a reading near centre (about .500 volts) and it should hold this reading as long as the engine idles. If the downstream oxygen sensor fluctuates in a similar manner to the upstream oxygen sensor, then there is surely some fault in the catalytic converter. If either the upstream or downstream oxygen sensors are slow to respond, or fail to respond, to changing engine conditions the respective sensor may be defective. However, if this is the case then an oxygen sensor code should also accompany the direct ozone reduction catalyst temperature code. Just remember to diagnose and repair oxygen sensor codes, fuel trim codes, fuel mixture codes, or misfire codes first before you start attempting to diagnose a direct ozone reduction catalyst temperature code.

Common Mistakes When Diagnosing The P2571 Code

• Many mechanics do not properly investigate the main reason which led to direct ozone reduction catalyst failure. The repeated direct ozone reduction catalyst failure would occur when there is presence of other codes and they are left unattended for long periods of time.
• Another mistake which is made by the technicians is that they simply replace the oxygen sensor without even verifying it. They often replace the oxygen sensors to avoid costly converter replacement. This would not solve the issue, but would lead to added expense.