P2454 - OBD Trouble Code

The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile. The diesel exhaust fluid (DEF) is utilized to aid while converting the surplus exhaust particles to harmless gases. Well, to completely burn off those particles, an increased temperature is required in the exhaust system. It should be noted that an injection of DEF fluid is required into the exhaust stream in order to attain the optimum temperature diesel particulate filter (DPF).

What causes this problem with the Diesel Particulate Filter Pressure Sensor A Circuit Low?

• The diesel exhaust fluid reservoir might be free
• Incorrect diesel exhaust fluid
• Quirks in the DPF pressure sensor
• Choked DPF pressure sensor tubes/hoses
• DPF pressure sensor A circuit might be open or little
• Incapable DPF regeneration
• DPF regeneration system might be out of order

1. Engine Control Module – It is not always the components, but the ECM that can also be faulty. It can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
2. Diesel Exhaust Fluid Pump – The diesel exhaust fluid pump is usually located in the cover of the transmission. It draws fluid from a pump in the bottom of the transmission and feeds it to the hydraulic system. It also feeds the transmission cooler and the torque converter. Thus, replace faulty fluid pump now!
3. Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases and thus needs through checks for system and software errors. Thus check and replace it, if required.
4. Exhaust Gas Recirculation Valve - Are you facing some engine performance issues? If there are some flaws in the EGR valve, then it would disrupt the automobile’s air fuel ratio which would ultimately cause engine performance problems like decrease in power, reduction in fuel efficiency as well as issues related to acceleration. Replace it as soon as possible.
5. Exhaust System Parts - Malfunctioning exhaust system parts may lead to a noisy engine exhaust. A significant decrease in the fuel efficiency, power and acceleration are likely to be observed first as soon as there is a fault in the exhaust system parts. So it is important to change them. Log on to Parts Avatar now for supreme quality auto parts.
6. Electronic Control Unit – The ECU manages the cooling system to control the battery operating temperatures and thus must be replaced, if found faulty. Thus, buy new ECU modules and components from us!
7. Diagnostic Tool – Make use of quality diagnostic tools to resolve any OBD error code. Buy quality diagnostic tools from us!

Willing to know some common symptoms of OBD Trouble Code P2454? Your wish is our demand. Have a look at them below:

Common Symptoms

• Visibility in the check engine light
• The overall engine performance might start declining
• A lot of black smoke might start coming out from vehicle exhaust
• Rise in the transmission temperatures
• The temperature of the engine might be excessive

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 P2454:

• Make sure to mend the faulty flawed DPF pressure sensor A harness
• Repair or replace the quirky DPF pressure sensor A circuit
• You must fix the defective DPF pressure sensor tubes/hoses
• Rehabilitate the defaults in the diesel exhaust fluid
• Carefully adjust the faults in the DPF pressure sensor
• The DPF regeneration system parts should be restored to working order

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If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

A technician begins by hooking the vehicle to an OBD-II scanner to verify that the code is present, and check for other codes. The freeze frame data along with current data is recorded, and the codes are then cleared to see if they reoccur.

You may also need to obtain diagnostic flow charts, wiring diagrams, connector face views, connector pin out charts, component locations, and component testing procedures/specifications from the vehicle information source. All this information will be needed to correctly diagnose the stored code P2454. You must always start with a visual inspection of the wiring harnesses and connectors. Make sure to pay specific attention to wiring that is routed near hot exhaust constituents and sharp edges. Check the battery and battery terminal ends at this time and check alternator output. After that the scanner should be connected and all the stored codes as well as freeze frame data should be retrieved properly.

You can always note this information down for future reference. It might come in handy if this code proves to be intermittent. After that the codes should be cleared up and the automobile should be taken out for the test drive. Now if the code immediately resets, then inspect to make sure that diesel exhaust fluid is present and that it is of the right type. This code is generally stored due to lack of diesel exhaust fluid. if the right type of diesel exhaust fluid is not present, then the DPF will not be regenerated

effectively and then it would lead to an increase in the exhaust pressure. The manufacturer’s service manual can be consulted for instructions on how to test the DPF pressure sensor using the DVOM.

If the sensor would not comply with manufacturer’s resistance specifications, then it would indicate that it is faulty and thus, it should be replaced. But if the sensor is in good working condition, then inspect for clogs and/or breakage in the DPF pressure sensor supply hoses. The hoses should be cleaned and replaced as per the requirement. Make sure to use high temp silicon hoses. If the sensor is in good working condition and supply lines are intact, then the next step would be to start testing system circuits. All associated control modules should be disconnected prior to testing resistance and/or continuity with the DVOM. Repair or replace open or shorted circuits as per the requirement. Here are some additional diagnostic notes which would prove to be very helpful. If you find out that the DPF pressure sensor hoses are melted or cracked, then they should be rerouted after replacement. The owners/service manual should be consulted to find out if your vehicle is equipped with an active DPF regeneration system or a passive system. Clogged sensor ports as well as clogged sensor tubes are common.

Common Mistakes When Diagnosing The P2454 Code

• Some issues related to the exhaust leakage
• Failure in the exhaust pressure sensor
• Issues related to the exhaust system parts