P20E4 - OBD Trouble Code

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The trouble code P20E4 can be defined as Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1. Is the car engine not performing as per the expectations? Are you noticing affected fuel economy, increased emissions from the tailpipe and check engine light illuminated on the dashboard? This can be an indication of the problem with the exhaust gas temperature sensor of the vehicle, resulting in OBD code P20E4 getting stored in the powertrain control module (PCM).

The exhaust gas temperature sensor is being monitored by the engine control module. This trouble code would be set by the ECM when the exhaust gas temperature sensor would not be as per the specifications set by the manufacturer. The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile.

What causes this problem with the Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1?

• Some flaws in the exhaust gas temperature sensor
• Exhaust gas temperature sensor harness might be opened or sometimes shorted
• Exhaust gas temperature sensor circuit might have inadequate electrical connection
• Exhaust might start leaking
• Immoderate particulate matter buildup on sensor

1. Engine Control Module - Most of the time it is difficult to intercept the ECM faults and thus must be checked for thoroughly. There can be a problem with the circuit or the software might have malfunctioned. Thus repair, replace or reprogram the component as per requirement.
2. Automatic Transmission Module - Sometime the transmission module is unable to communicate or correctly anticipate the speed of the vehicle and thus creates difficulty in gear shift leading to sluggish acceleration, throttle response and stalling. Thus can also hamper a lot of components physically and thus must be check for and replaced, if required.
3. Fuel Injector - The fuel injectors are important component of the fuel delivery system that helps in proper utilization of the fuel entering the engine. This not only helps in taking care of the air to fuel ratios in the engine, helping the combustion process but also enhances the performance. Thus, replace faulty injector now!
4. Powertrain Control Module - If the PCM is faulty, it can stores wrong OBD codes and can lead to misdiagnosis. This can happen due to misinterpretation of data received from the various sensors and components which also affects the vehicle’s performance. Thus replace it immediately.
5. Exhaust Gas Recirculation Valve - It is auto part commonly found on many road going automobiles. It is a part of the vehicle’s exhaust gas recirculation (EGR) system, an emissions system that is designed to recirculate exhaust gases back into the vehicle’s intake so that it can reduce cylinder temperatures and NOx emissions. Purchase top notch exhaust gas recirculation valve from us at economical prices.
6. Electronic Control Unit - If the ECU is at fault, it will not be able to read the boost converter temperatures correctly leading to underperformance. Thus, replace faulty ECU now!
7. Diagnostic Tool - Choose from our diagnostic tools collection that will come handy to detect and correct the OBD error code.

Our main motive is to achieve customer satisfaction as for us our customers are everything and that’s why we will help you to diagnose P20E4 code by mentioning some major symptoms below:

Common Symptoms

• The service engine soon light can start lighting up

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P20E4:

• Carefully adjust the faults in the exhaust gas temperature sensor circuit
• Adjust the flawed exhaust gas temperature sensor harness
• Bad exhaust gas temperature sensor replacement
• Faulty wiring and connector repairs

• Powertrain control module repair and reprogramming

However, if you face any issue then we have stocked a wide range of best priced exhaust gas temperature sensor, ecm, pcm, diesel particulate filter, cylinder head gasket, body control module, exhaust manifold, transmission shift solenoid, ecm module, pcm module and more to help you out in fixing your car.

Here are some steps which you should follow in order to diagnose this fault code:

• Take the help of an experienced mechanic who will visually inspecting the exhaust system, searching primarily for the leak. Since the leak is considered a significant one, it should be fairly easy to locate.
• Find and freeze frame data with the code. Then, clear the code and take the vehicle on a test drive under the same conditions.
• If the code reappears, perform a visual inspection of the components and its wiring.
• If the wiring is okay, the exhaust gas temperature sensor itself will be tested to confirm operation.
• If the exhaust gas temperature sensor is functioning properly, the technician must check for other components of the exhaust system for damages and faults.
• The mechanic will repair or replace the part that is causing the large exhaust leak, once the source of exhaust leak has been found.
• Check for any wiring and harness issues and correct the damaged wirings.
• If there is no problem found, check for the faulty ECU. Although, this fault is very rare but can be a reason for problematic car exhaust system, thus hampering the engine performance. The ECU needs to be replaced in such condition and has to be reprogrammed to erase any stored faulty error.

Common Mistakes When Diagnosing The P20E4 Code

• Non performance of the exhaust gas temperature sensor
• Failure in the car wiring
• The powertrain control module might not function properly