Guide To P245F OBD Error Code Solutions

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If you are looking for information with respect to P245F error, then keep reading ahead. The PCM looks after the rationality of the DPF pressure sensor when it is idle or during the operations of the part load condition. The test will fail if the value of the diesel filter pressure signal is low than 0.15 kPa (0.022 psi). The failure of the test will also occur if the value of the DPF pressure sensor signal value is lower than the least value or bigger than the extreme value. The least and extreme value depends on the volume of the exhaust.

OBD –II error code, PCM defective is generally called as diesel particulate filter pressure sensor ‘B’ circuit. The remaining exhaust particles will be assisted by the diesel exhaust fluid (DEF) to convert them into harmless gases. The temperature of the exhaust system has to be high if these exhaust particles have to be burnt. When the DEF is pushed into the exhaust stream it will raise the diesel particulate filter up to the expected temperature. The system will then be able to process these harmful NOx to carbon dioxide, water, and nitrogen. If there are any NOx which is still present in the exhaust stream, it can be reduced by adding the reductant catalyst (SRC). The exhaust pressure sensor calculates the exhaust pressure which keeps moving in and out of the DPF. The P245F error will get stored in the vehicle if an erratic signal is found by the PCM from one of the pressure sensors.

What causes this problem with the Diesel Particulate Filter Pressure Sensor 'B' Circuit Range/Performance?

• Damaged diesel particulate filter pressure sensor.
• There might be an opening or the harness of the diesel particulate filter pressure sensor might be shorted.
• The electrical connection might be poor in the diesel particulate filter pressure sensor.
• The linking hose of the diesel particulate filter pressure sensor might be detached, scratched or missing.
• The connecting hose port of the diesel particulate filter pressure sensor might be damaged or defective.
• The high amount of soot or ash in the diesel particulate filter.

1. Diesel exhaust fluid - If the diesel exhaust fluid is poor, then the malfunctioning of the machine SCR’s system will take place. Replace it as soon as possible.
2. Exhaust system - If there is a loud roaring noise in the vehicle, then it’s high time to replace the faulty exhaust system and get rid of the P245F error code.
3. Diesel particulate filter - Does your engine fail to start? Does your engine find it very hard to start or accelerate? Then the DPF can be faulty. Change it quickly.
4. Powertrain control module - If the sensor circuit is shorted it will overload the engine and damage the PCM module. If you find the powertrain control module to be damaged get the replacement from Parts Avatar.
5. Engine wiring connector - The engine wiring connectors might get easily eroded if the temperature is high. Changing the damaged engine wiring connectors is very important so as to avoid the P245F error in the vehicle.
6. Exhaust pressure sensor – If there are any leaks or if the tube is clogged or blocked, then the exhaust pressure sensor can be defective. Replace it as quickly as possible.
7. Engine control module - The engine performance will be poor and there will be a drop in fuel economy if the ECM malfunctions. Replace it immediately.

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 P245F here:

Common Symptoms

This code should be considered urgent, as it indicates conditions that could lead to internal engine or fuel system damage. Symptoms of a P245F code may include:

• You will see more black smoke from the exhaust of the vehicle.
• The engine performance is diminished.
• The temperature of the engine is more.
• The transmission temperature is more than normal.

Want to correct the Trouble Code P245F? Read these points mentioned below:

• Changing the broken ECM/PCM.
• Replacing the unclean diesel exhaust fluid.
• The defective diesel particulate filter must be changed.
• Altering the exhaust pressure sensor.

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P245F code to be stored:

• The engine system along with the powertrain control module or the engine control module will initiate the P245F code solenoid valve so that it controls the oil pressure to the engine mechanism that is inserted into the valve system and the timing of the valve between high and low can be switched.
• A diagnostic trouble code will get stored in the vehicle if there is an open or short circuit in the system.
• The sensor ports as well as the sensor tubes which might be clogged as common.
• It is always best to check with either the service manual or the owner and find out if the vehicle is well-equipped with a diesel particulate filter regeneration system which might be active or a passive system.
• Once the DPF pressure sensor hoses which are molten or damaged are replaced, they must be redirected.

Common Mistakes When Diagnosing the P245F Code

• The exhaust pressure sensor might be faulty.
• Malfunctioning of the powertrain control module.
• An issue with the electrical wires.