P2462 - OBD Trouble Code

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Baffled? See the error code P2462 flashing again? Here’s how you can diagnose and treat the error code P2462 with Parts Avatar. In order to convert the remaining exhaust particles to harmless gases, the diesel exhaust fluid (DEF) is used. An increased temperature of the exhaust system is required. This optimum temperature in the diesel particulate filter is achieved by injecting the DEF fluid into the exhaust stream.

When the PCM detects that the DPF pressure sensor B is performing erratically, OBD code P2462 gets stored in the system.

Diesel Exhaust Fluid (DEF) helps in converting harmful exhaust particles to harmless gases. For burning these particles, the temperature of the exhaust system has to be increased. The DEF Fluid with the help of the injector is sent into the exhaust stream to raise the Diesel Particulate Filter (DPF) up to optimal temperature. The exhaust system then convert harmful nitrous oxide compounds to nitrogen, carbon dioxide, and water. The reductant pump transfers the DEF (Diesel Exhaust Fluid) from the tank to the DEF Injector and if the DPF pressure sensor fails to perform as per the powertrain control module (PCM), code P2462 will be stored.

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

• A defective diesel particulate filter (DPF) pressure sensor
• The harness in the diesel particulate filter (DPF) pressure sensor is loose or short circuited
• A bad electrical connection in the diesel particulate filter (DPF) pressure sensor circuit
• A jammed DPF

1. Engine Control Module - Want to know the most common reason behind the failure in the engine control module? Corrosion or damage because of moisture can cause ECM failure. Corrosion might enter the ECM through the wiring harness and moisture can enter by a failure in the seals in the ECM itself.
2. 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.
3. 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!
4. Powertrain Control Module - The PCM makes the engine and transmission work in tandem. Any issue with the powertrain control module will cause major problems with the efficient running of the vehicle.
5. Engine Wiring Harness - Your car ECM would not operate properly if there are some cracks or break in the engine wiring harness. Corrosion as well as physical damage are the most common reasons why you should replace an engine wiring harness. Purchase high grade engine wiring harness online from Parts Avatar Canada.
6. Automatic Transmission Module - Faulty transmission module can cause problematic down shifts and upshifts, leading to stalling while accelerating or slowing down. This can also hamper many transmission system parts. Thus replace it now!
7. Electronic Control Unit - If your vehicle fails to start for no apparent reason, this is also a good indicator that there can be some issues with the ECU. If you check the car battery, starter and other common electrical components, and the vehicle still does not start, a quirky electronic control unit should be the next logical thing to consider.
8. Diagnostic Tool - In order to fix these errors, you need few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come handy to do so and resolve all your vehicle problems. Visit today!
9. Diesel Particulate Filter - Love hitting the roads but hate the halts? Well, dirty or jammed diesel particulate filter not only triggers the error code P2462 but also problems like a deactivation of the start/stop button. Now get your error code P2462 fixed right here with us. What are you waiting for? Get your filter changed now.
10. Exhaust Gas Temperature Sensor - Failed emission tests? Engine pings? Check engine light illuminated? Well, all this is caused due to a faulty exhaust temperature sensor. Tune into Parts Avatar to get your error code P2462 fixed just in the right time.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P2462 code by listing out some major symptoms. They are mentioned below as follows

Common Symptoms

• Falling engine performance
• Black smoke emitting from vehicle exhaust
• Diminishing fuel efficiency
• Other codes related to emission

Learn the ways with which you can correct this trouble code:

• Replace or repair a faulty diesel particulate filter (DPF) pressure sensor
• All the corroded or open harness in the diesel particulate filter (DPF) pressure sensor should be fixed
• Measures should be taken to fix a poor electrical connection in the diesel particulate filter (DPF) pressure sensor circuit
• A clogged DPF should be mended or restored

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of PCM, Diesel Particulate Filter, ECM, Exhaust Pressure Sensor, Diesel Exhaust Fluid, Exhaust System, Exhaust Gas Temperature and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2462 code to be stored:

Firstly, if you find any SRC codes stored in the system, we advise you to attend to these codes even before attempting to diagnose the error code P2462. Repair or restore all the pre-catalyst leakages too before starting to diagnose the P2462 code. You will require a diagnostic scanner, a digital volt/ohmmeter (DVOM), an infrared thermometer with a laser pointer, and a source of vehicle specific diagnostic information to diagnose a code P2462. Then try to locate a technical service bulletin (TSB) that successfully matches the vehicle year, make/model as well as the engine size, code/s stored, and symptoms exhibited, as it could be really helpful diagnostic information. Start with a visual inspection of the SCR injection system, exhaust temperature sensors, NOx sensors, and oxygen (O2) sensor harnesses and connectors. All the short circuited or damaged wiring and or connectors should be mended or restored before performing the next step. Plug in the scanner to the vehicle diagnostic connector to retrieve all stored codes and imperative freeze frame data. All the information extracted should be written down before clearing the codes and test driving the vehicle till the PCM either enters readiness mode or the code is reset. It should be noted that the code is an intermittent one and may be much more challenging to diagnose (at this time), if the PCM enters readiness mode.

Well, in such a case, the conditions that added to the code being stored may need to worsen before an accurate diagnosis can be made. Also, if the code resets, search the source of vehicle information to attain the diagnostic flow charts, connector pin out charts, connector face views, as well as component testing procedures and specifications. This information is essential to complete the next step of the diagnosis. The infrared thermometer should be used to collect the actual pre and post diesel particulate filter temperatures. The scanner data stream should then be observed to compare the actual findings with the information found on the scanner data display screen. Next, you need to compare the exhaust temperature sensor data between engine banks.

If in case, any discrepancies in the exhaust temperature are identified, examine the respective sensor/s using the DVOM. Also, the sensors that fail to match with manufacturer specifications, should be considered malfunctioning. If all sensors and circuitry appear to be functioning in the required order, suspect that the diesel particulate filter is defective or that the SCR system is malfunctioning. Ensure that the DEF reservoir is full with the correct fluid and the SCR system is functioning as per the requirements.

Common Mistakes When Diagnosing the P2462 Code

Here we have listed a few common mistakes that should be avoided while diagnosing the error code P2462:

• A fault in the diesel particulate filter (DPF)
• Leakage in the intake air
• Loss of adjustment or contaminated mass air flow (MAF) sensor