P245E OBD Error Code: Problem & Solutions

The failure of the PCM is commonly known as the diesel particulate filter pressure sensor "B" circuit. The conversion of the remaining exhaust particles into harmless gases is carefully assisted by the diesel exhaust fluid (DEF). The temperature of the exhaust system has to be more so that the leftover exhaust particles can be easily burnt off. In order to bring the diesel particulate filter up to the expected temperature, the DEF fluid has to be injected into the exhaust stream. This will finally help in the conversion of harmful NOx into nitrogen, water, and carbon dioxide. The excessive NOx which was still available in the exhaust stream can be reduced with the help of reductant catalyst (SRC). The exhaust pressure which keeps going in and out of the DPF is carefully measured by the exhaust pressure sensor.

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

• Defective diesel particulate filter pressure sensor.
• The diesel particulate filter pressure sensor harness might be open or shorted.
• The electrical connection of the diesel particulate filter pressure sensor might be poor.
• The connecting hose of the diesel particulate filter pressure sensor might be free, damaged or lost.
• The connecting hose port of the diesel particulate filter pressure sensor might be split or defective.
• The amount of soot or ash in the diesel particulate filter might be more.

1. Diesel Exhaust Fluid - If the DEF is contaminated, then the diesel exhaust fluid consumption by your engine system will be more. Replace the contaminated DEF instantly.
2. Exhaust System - Avoid the P245E error code by replacing the damaged exhaust system if you see black smoke from the exhaust of the vehicle.
3. Diesel Particulate Filter – The DPF can turn out to be faulty if there is too much of power loss in the vehicle. Get rid of the defective DPF as soon as possible.
4. Powertrain Control Module - The PCM helps in generating output signals to control relays, actuators, and solenoids. If there is no proper output signal or if it is erratic then the PCM might be faulty. Fix the faulty PCM instantly
5. Engine Control Module - The behavior of your engine will be very erratic if the ECM is faulty or broken. Get it fixed or replaced as soon as possible.
6. Exhaust Pressure Sensor – Hesitation of the engine to start during acceleration is a sign of a damaged exhaust pressure sensor. Get rid of it as soon as possible.
7. VCT Solenoid – A decrease in fuel economy will occur if the VCT solenoid is faulty. Replace/ repair the damaged VCT solenoid quickly.

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 P245E here:

Common Symptoms

The conditions for causing this code to be stored could lead to internal engine or fuel system damage and should be addressed immediately. Symptoms of a P245E code may include:

• The exhaust will emit excessive black smoke from the vehicle.
• Decreased engine performance.
• The engine temperature is very high.
• Transmission temperature is more.

Here are some ways with the help of which you will be able to correct the OBD Code P245E.

• The faulty ECM/PCM must be fixed.
• The dirty diesel exhaust fluid must be changed.
• Changing the broken diesel particulate filter.
• The exhaust pressure sensor needs replacement.

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

• The engine control module and the powertrain control module in combination with the engine system will start the P245E error code solenoid valve so that the oil control pressure to the engine mechanism which is installed in the valve system is controlled to change the timing of the valve between high and low.
• If there is an opening or short circuit in the engine system, then the P245E error code will be stored in the vehicle.
• The pressure sensor hoses of the DPF which are defective or molten have to be re-directed once the damaged parts are replaced.
• In order to find out if the vehicle is well-equipped with an active DPF regeneration system or the passive system, it is always best to consult with either the owner or the service manual of the vehicle.
• The sensor ports and the sensor tubes which might be clogged can be a common issue.

Common Mistakes When Diagnosing the P245E Code

• The exhaust pressure sensor might be defective.
• Faulty powertrain control module.
• Problematic electrical wires.