Error Code P200D: What It Means & What To Do?

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Stressed? Can’t comprehend the error code P200D? Don’t worry! Parts Avatar is here to help! Here’s how you can solve the error code P200D. The diesel exhaust fluid (DEF) is utilized to aid while converting the surplus exhaust particles to harmless gases. Well, to completely burn off those particles, an increased temperature is required in the exhaust system. It should be noted that an injection of DEF fluid is required into the exhaust stream in order to attain the optimum temperature diesel particulate filter (DPF).

Then the system is able to alter the hazardous NOx to nitrogen, carbon dioxide and water. Further, in order to reduce any NOx present in the exhaust stream, the reductant catalyst (SRC) is added. The code P200D sets when the DPF heats extremely.

What causes this problem with Diesel Particulate Filter Over Temperature Bank 2

• A faulty SCR system
• A malfunctioning SCR injector
• Dirty or inadequate DEF fluid
• Damaged exhaust temperature sensor
• A defective SCR controller or a programming error
• Leakage in the pre-catalyst exhaust
• Wrongly installed aftermarket or high-performance exhaust components

1. Diesel exhaust fluid pump - Love travelling? But tired of these halts in the journey? Having problems with the diesel exhaust fluid pump? It can also trigger problems with equipment, including engine de-rating or shut-down. So to prevent any such problems, change or repair your diesel exhaust fluid pump right away. Don’t you worry, Parts Avatar has it all. Tune in now!
2. Diesel particulate filter - A crammed and contaminated diesel particulate filter leads to problem with the functioning of the cooling fans, a slight increase in the fuel consumption and the engine performance. Log into Parts Avatar for your new fuel injectors available at just the right prices.
3. Exhaust temperature sensor - Is your engine overheating? Spending to much on gas lately? Well, all this likely to be caused due to your faulty exhaust temperature sensor. So in order to get rid of the error code P200D and all these complications, change or repair your exhaust temperature sensor now. Tune into Parts Avatar!
4. Powertrain control module - Abbreviated PCM; this is an integral control unit. It not only triggers the error code P200D but also can lead to a diminishing engine performance. So a defective one should be changed immediately.
5. Oxygen sensor - Check engine light illuminated? Bad gas mileage? Yes, all this happens due to a malfunction in the oxygen sensor. We advise you to get your faulty oxygen sensor changed right away. Now get your oxygen sensor delivered right at your doorstep with Parts Avatar!
6. Mass air flow sensor - Is your engine very hard to start or turn over? Engine stalls after every few minutes? Error code P200D? It is all likely to be caused due to a fault in the MAF sensor. Change or repair now!

Well, if you are looking to know about the common symptoms related to this error code P200D, we are have worked out a small list to help you discover this error code with your vehicle.

Common Symptoms

• Decreasing engine performance
• Black smoke emission from the vehicle exhaust
• Fall in the fuel efficiency
• Storage of other codes related to emission

Fixing problems with your car is not as easy as it might seem. You need to be extremely careful and follow certain steps:

• Repair or replace a damaged SCR system
• Make sure a dirty or inadequate diesel exhaust fluid is corrected in the right away
• Amendments should be made to fix a defective SCR controller or a programming error
• A damaged exhaust temperature sensor should be mended or restored
• Ensure there are no leakages in the pre-catalyst exhaust. If you find one, it should be repaired or replaced immediately
• Adjust a wrongly installed aftermarket or high-performance exhaust components

Apart from this, you might need to replace other damaged parts too like diesel exhaust fluid, diesel particulate filter, exhaust temperature sensor, PCM, oxygen sensor, MAF sensor, maf sensor cleaner, dpf cleaner, particle filter, oil pressure sensor, air flow meter and more. You can easily find all these parts with us. Not only that you can get these parts shipped to your door free, if your cart value happens to exceed $99.

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

It should be noted that, in presence of any SRC codes, they should be treated before attempting to diagnose an error code P200D. Before you start with the diagnosis, all the pre-catalyst exhaust leaks should be mended before. All that is required to diagnose the error code is diagnostic scanner, a digital volt/ohmmeter (DVOM), an infrared thermometer with a laser pointer, and a source of vehicle specific diagnostic information. It is advised to locate a technical service bulletin (TSB) that collates the vehicle year, make, and model; as well as the engine size, code/s stored, and symptoms displayed (as it helps alot in extracting useful information) Start the procedure with a thorough visual inspection of the SCR injection system, exhaust temperature sensors, NOx sensors, and oxygen (02) sensor harnesses and connectors. All the corroded or damaged wirings and connectors should be repaired or replaced before proceeding further. Connect the scanner to the scanner to the vehicle diagnostic connector to retrieve all stored codes and relevant freeze frame data. All this information should be recorded before clearing the codes and test driving the vehicle till the powertrain control module either shows the readiness mode or the error code returns. The condition will be much more complicated to diagnose, if the PCM enters readiness mode (intermittent condition). In this case, the conditions that added to the code being stored may need to worsen before a precise diagnosis can be carried out. Also, in case the code resets, search the source of vehicle information to acquire diagnostic flow charts, connector pin out charts, connector face views, as well as component testing procedures and specifications. This information will aid greatly in completing 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 be observed to compare the actual findings with the information found on the scanner data display screen. It is advised to compare exhaust temperature sensor data between the engine banks. If in case exhaust temperature discrepancies are found, all the respective sensor/s should be tested using the DVOM. Sensors that fail comply with manufacturer specifications, should be suspected as damaged. If all sensors and circuitry appear to be functioning in order, a faulty diesel particulate filter or a failed SCR system should be suspected. Ensure that the DEF reservoir is full of the appropriate fluid and the SCR system is functioning as per the requirements.

Common Mistakes When Diagnosing the P200D Code

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

• A possible fault in the diesel particulate filter (DPF)
• Intake air leakage
• Contaminated mass air flow (MAF) sensor or no adjustment