Error Code P2455: What It Means & What To Do?
OBD Code P2455 - Diesel Particulate Filter Pressure Sensor A Circuit High
The trouble code P2455 can be explained as Diesel
Particulate Filter Pressure Sensor A Circuit High. 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. One thing which you must keep in mind that its symptoms
as well as causes would surely vary as it depends upon a number of things. The
diesel particulate filter pressure sensor is being monitored by the engine
control module. This trouble code would be set by the ECM when the diesel
particulate filter pressure sensor A circuit would not be as per the
specifications set by the manufacturer.
Learn More About OBD Error Code P2455
This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.
What causes this problem with the Diesel Particulate Filter Pressure Sensor A Circuit High?
- The diesel exhaust fluid reservoir might be bare
- Incorrect diesel exhaust fluid
- There can be distorted DPF pressure sensor
- Plugged DPF pressure sensor tubes/hoses
- DPF pressure sensor A circuit might be unlocked
- Inept DPF regeneration
- Non functional active DPF regeneration system
Replace/Repair These Parts To Fix Code P2455
- Engine Control Module – ECM faults are rare but can be a big problem as faulty ECM will cause wrong vehicle operations and can also result in wrong OBD codes getting stored in the system which can also cause misdiagnosis. Thus, replace faulty ECM components now!
- Electronic Control Unit – The ECU coordinates with the temperature sensor to control the blower fan for keeping the battery temperatures under control. So, replace faulty ECU components now!
- Powertrain Control Module – Check for PCM error which might be due to circuit faults that might require complete replacement and reprogramming. Replace it now!
- Exhaust Gas Recirculation Valve - The most common symptoms of an issue with the vehicle’s EGR valve is a rough idle. It is not uncommon for EGR valves to malfunction and become stuck in the open position. Poor EGR valve can cause a lot of difficulties, so why not get it replaced at time?
- Diesel Exhaust Fluid Pump - The fluid pump needs to work properly if the transmission system has to perform. If it is not functioning, the transmission may slip and cause harsh shifts too. Thus replace faulty pump now and buy a new one from us!
- Exhaust System Parts - A burning smell of the engine is likely to be seen as soon as there is a fault in any of the exhaust system parts. Also, performance issues are likely to arise due to a failure in the exhaust manifold. A leak or crack also leads to a reduction in the power, acceleration and efficiency of the vehicle. Repair or replace now.
- Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to grab amazing deals.
Symptoms Of The OBD Error Code P2455
It is vital 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 P2455 here:
Common Symptoms
- Appearance of the service engine soon light
- The engine performance might be reduced
- Excessive black smoke might start emitting from automobile exhaust
- Rise in the engine temperatures
- The temperature of the transmission might be excessive
How To Correct P2455 Diesel Particulate Filter Pressure Sensor "A" Circuit High
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:
- The malfunctioning DPF pressure sensor tubes/hoses should be repaired or replaced as per the need
- You must fix the defective DPF regeneration system parts
- Repair or replace the quirky DPF pressure sensor A circuit
- Carefully adjust the faults in the diesel exhaust fluid
- Recondition the non-functioning flawed DPF pressure sensor A harness
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Easy Diagnosis Of Engine Error OBD Code P2455
Here are
some steps which you should follow in order to diagnose this fault code:
- As an initial step the mechanic will carefully inspect the vehicle with the help of a scanner.
- After this, the technician will connect a scanner to the diagnostic code so that he can recover all the codes and freeze frame data.
- You may also need to obtain diagnostic flow charts, wiring diagrams, connector face views, connector pinout 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 P2455. 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 silicone 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 P2455 Code
- Leakages in the auto exhaust
- Non performance of the exhaust pressure sensor
- Failure in the exhaust system parts