P2002 - OBD Trouble Code

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The trouble code P2002 can be described as Diesel Particulate Filter Efficiency Below Threshold Bank 1. The error code P2002 would start triggering when the PCM would detect some fault in the signal from the back-pressure sensor which is being sent to the engine computer. 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.

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. The P2002 trouble code would start appearing if the signal from the back-pressure sensor being sent to the engine computer is not as per the predetermined limit has been detected by the ECM. Now when this would occur, the fault code would be stored and there would be an illumination in the malfunction indicator light.

What causes this problem with the Diesel Particulate Filter Efficiency Below Threshold Bank 1?

• Defaults in the particulate filter
• Malfunctioning exhaust back pressure sensor
• Leakage in the exhaust
• Inferior quality diesel fuel

1. Engine Control Module - Is your car engine light still staying ON after resetting or your car engine is turning off for no reason? Then these are some common symptoms indicating that your car engine control module is defective.
2. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is the in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
3. Exhaust Gas Recirculation Valve - Did you just see check engine light flashing on your dashboard? If the computer would detect some fault with the automobile’s EGR valve circuit, then it would set up the check engine light so that the driver is notified about the fault. Don’t waste time and get them replaced or else this fault code can turn up.
4. Diesel Exhaust Fluid Pump - The diesel exhaust 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!
5. Electronic Control Unit - The ECU is a major component of your car's onboard computer. It's used to regulate many systems and subsystems in your car's engine, drive train and other major components. Visit us to buy best quality ECU online.
6. Diagnostic Tools - Take help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us! 

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2002 code by mentioning some major symptoms below:

Common Symptoms

• Illumination in the service engine soon light
• Sometimes there might be no visible symptoms present
• Black smoke might start emitting from the tailpipe during acceleration
• Lack in engine performance
• Diminishing fuel economy

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 P2002:

• It is essential to change the diesel fuel
• Repair or replace the quirky diesel particulate filter
• Rehabilitate the defaults in the diesel particulate filter
• Recondition the non-functioning back pressure sensor
• Repair or replace the flawed PCM/ECM

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

Use an OBD-II scanner in order to verify that the code is present, and check for other codes for any other type of error or problem that might need attention. The current data along with freeze frame data are recorded, and the codes are then cleared to see if they reoccur. The vehicle is inspected for any problems with the wiring and connectors to check for loose connections, corrosion, or shorts.

The tests related to the particulate filter and back pressure sensor may help pinpoint the problem, as well as inspection of the associated wiring will further help in finding the cause. Then the technician should test drive the vehicle with an OBD-II scanner connected to track the back pressure sensor readings. Now if bank 1 appears to be sending different signals than bank 2, there would be a need of further troubleshooting of the sensor before determining the particulate filter should be restored.

Common Mistakes When Diagnosing The P2002 Code

• Inferior quality fuel can frequently temporarily foul a diesel particulate filter. This is why a test drive at highways speeds is essential to try and clear out the filter before restoring parts.

P2003 - Diesel Particulate Filter Efficiency Below Threshold Bank 2