P040E OBD Error Code: Problem & Solutions

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The emissions are now improved with the use of EGR systems by re circulating the fresh exhaust which is coming from the exhaust manifold or some other parts of the exhaust system and then recycling or re burning it so that the fuel which we pay for with our hard earned cash is burned effectively.

The trouble code P040E can be described as Exhaust Gas Recirculation Temperature Sensor A Circuit Intermittent.

The main function of the EGR temperature sensor is to provide a means for the engine control module to monitor the temperature which is within the EGR system as well as adjust the flow by using the EGR valve. This is done by utilizing a common temperature sensitive resistor-type sensor.

What causes this problem with the Exhaust Gas Recirculation Temperature Sensor “A” Circuit Intermittent?

• Malfunctioning engine control module
• The connections might be bad
• Defaults in the exhaust gas recirculation temperature sensor 'A'
• Exhaust gas recirculation temperature sensor 'A' harness might be opened or shorted
• There can be bad electrical connection in the exhaust gas recirculation temperature sensor 'A' circuit poor
• The exhaust gas recirculation temperature sensor might have some defaults
• EGR temperature sensor gasket might be leaking
• Cracked or leaking exhaust pipe in which the sensor is mounted
• Burnt wiring harness and some defaults in the sensor wires
• Quirks in the connector

1. EGR Valve Gasket - OBD Code P040E can appear because of faulty EGR Valve Gasket.
2. Fuel Temperature Sensor - There can be some issues with the Fuel Temperature Sensor due to which you may see P040E code appearing over and over again. Visit us to buy best quality Fuel Temperature Sensor online.
3. Engine Control Module - Are you facing some faults in your Engine Control Module? Don’t worry and get them replaced or else P040E code can turn up.
4. Coolant Temperature Sensor - Common cause behind this P040E error code can be some fault in Coolant Temperature Sensor. So, it will be a good decision to replace them now.
5. Powertrain Control Module - Engine Control Module is perfectly fine but still but having that trouble code P040E flashing? In such a situation your Powertrain Control Module might be faulty. Why don’t you think of getting that replaced?
6. Throttle Position Sensor - The P040E code can also arise due to some issues in Throttle Position Sensor. So, it is advised to replace them as soon as possible.
7. Ambient Air Temperature Sensor - P040E code does not really end up spoiling your Throttle Position Sensor, but it might also accompany few Ambient Air Temperature Sensor issues. We have best Ambient Air Temperature Sensor with us.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P040E here:

Common Symptoms

• The exhaust smells might be excessive
• Appearance of service engine soon warning light
• The smog or emissions state might start failing
• Engine noises like knocking, rattling, pinging, etc can start appearing
• Issue of louder exhaust

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 P040E:

• It is important to repair the flawed wires
• Leakage in the EGR temperature sensor gasket should be corrected properly
• Replace the defective engine control module
• Make sure to repair the connections
• If there are some flaws in the connector, then you can always repair it
• Replace or repair the exhaust gas recirculation temperature sensor

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If you want to easily diagnose this trouble code, then you must follow the steps which are mentioned here as below:

• Check the sensor visually and surrounding EGR system, looking for exhaust leaks in particular. Also check out the sensor and its harness. Remember that high temps can cause havoc on plastic and rubber insulated wires so inspect them thoroughly
• Keep in mind that the black soot may indicate an exhaust leak around the area. A lot of EGR issues have been caused due to accumulated soot in the exhaust potentially caused by a number of things (poor maintenance, low quality fuel etc.). In this case, it is not an exception, so it can be a good idea to clean your EGR system or at the very least the temperature sensor. Be aware that sensors mounted within the exhaust systems may feel like they are seized when trying to unfasten. Just remember that these sensors are subject to substantial temperature fluctuations, so a bit of heat using an Oxyacetylene torch (not for the layman) may help loosen the sensor
• Now once you have removed the sensor use carburetor cleaner or similar product to effectively soak the soot. Use a wire brush to loosen soot in any overly accumulated areas. When you are reinstalling the clean sensor, make sure to apply some anti-seize to the threads to aid in preventing seizing. Verify the integrity of the sensor by measuring actual electrical values compared to manufacturer specific desired values. This can be done by using a multimeter and following manufacturer specific pin-out test procedures