P200E OBD Error Code: Problem & Solutions

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Error code P200E? Don’t know where to start the diagnosis from? Well, all you need is this little guide by Parts Avatar that is definitely going to help you solve the error code P200E. This OBD-II code P200E is also referred to as a catalyst system over temperature. All the leftover exhaust gases are taken in by the catalytic converter through the combustion process and then converted to harmless emissions. The front and rear oxygen sensors are compared to each other by the engine control module (ECM) to determine the catalytic converter efficiency. The PCM stores the code P200E when the input from the rear oxygen sensor parallels the front oxygen sensor. It should be noted that the catalytic converters are covered under federately dictated 8yr/80,000-mile warranty by the vehicle's manufacturer.

Pertaining to the modern clean burning diesel powered vehicle, the catalyst system is designed in such a way to decrease hazardous exhaust emissions before they can be released into the atmosphere. The exhaust emissions are mainly constituted by the hydrocarbons (HC), carbon monoxide (CO), nitrogen oxide (NOx), and particulate matter (soot - in diesel applications). It can be seen that the catalytic converter is generally a big (fine mesh) filter that can withstand extreme temperatures. The harmful emissions are corralled and the engine exhaust flows through within a platinum filtration element. These extreme temperatures produced inside the catalytic converter aid greatly while burning the harmful emissions elements. The responsibility of reducing all the exhaust emissions is held by the catalyst system (although a number applications are also equipped with a NOx trap). The exhaust gas recirculation (EGR) systems step further in reducing the NOx. Although, modern day’ more powerful diesel engines fail meet strict federal (U.S.) emission standards with the EGR, catalytic converter, and NOx trap alone. Only for this reason the selective catalytic reduction (SCR) systems were invented. The SCR systems installed insert diesel exhaust fluid (DEF) into the exhaust right in front of the diesel particulate filter and/or the catalytic converter. The temperature is increased by the accurately timed DEF injection of the filtration element, thereby allowing it to perform more effectively. This further makes the filtration element last longer thereby enabling fewer harmful exhaust emissions to be released into the atmosphere. It should be noted that the exhaust temperature sensors are situated before and after the catalyst to regulate its temperature and efficiency. The entire SCS system is controlled and regulated by either the PCM or a stand-alone controller (that connects to the PCM). In any case, the controller installed regulates the O2, NOx, and exhaust temperature sensors (as well as other inputs) in order to determine the required time for DEF injection. Well, accurate DEF injection is essential to maintain the exhaust temperature within acceptable parameters and enhance pollutant filtration. When the PCM identifies an excessive catalyst system temperature (for engine bank one), the code P200E is set. The malfunction indicator lamp at times, illuminates too.

What causes this problem with the Catalyst System Over Temperature Bank 1?

• A failed SCR system
• Defective SCR injector
• Contaminated or deficient DEF fluid
• A damaged exhaust temperature sensor
• Faulty SCR controller or programming error
• Pre-catalyst exhaust leakage
• Misadjusted aftermarket or high-performance exhaust components

1. Catalytic converter - Facing the problems caused by the error code P200E? An inferior quality catalytic converter can always be hazardous for the system also it is one of the primal causes behind the occurring of the error code P200E. In addition to the code it also causes problems with the engine performance. Tune into Parts Avatar for supreme quality catalytic converters at economical prices.
2. Powertrain control module - it should be noted that a faulty powertrain control module can cause a lot of problems. A damaged one leads to downward emissions along with other issues like a sluggish engine crank, failure in the emission system etc. We advise you to get your faulty PCM changed now by simply logging into Parts Avatar.
3. Oxygen sensor - A distorted oxygen sensor can end up being the chief host inviting the error code P200E. So replacing one can be one of the wisest decisions to avoid a problematic system.
4. Diesel exhaust fluid pump - Experiencing a loss of efficiency due to a faulty DEF pump? Yes, it is likely to lead to complications in the operations of the system. We advise you to get your diesel exhaust fluid pump changed right away.
5. Exhaust gas temperature sensor - Seeing black smoke emitting out from the system? Poor fuel economy? Engine overheating? All this happens due to a malfunctioning exhaust temperature sensor. Tune into Parts Avatar, your one stop destination for best products and services!
6. Exhaust system parts - Now get your error code fixed instantly with a new exhaust system parts in order to prevent the error code P200E as well as the problems related to the engine. Don’t know where to shop from? Tune into Parts Avatar now!

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 P200E here:

Common Symptoms

• Fall in the engine performance
• Increased black smoke emissions from vehicle exhaust
• Reduced fuel efficiency Other codes linked to emission

Here are some ways with the help of which you will be able to correct the OBD Code P200E:

• Repair or replace the catalytic converter if damaged
• Mend or restore a defective SCR system or SCR injector if required
• Make sure you change the dirty DEF fluid
• A faulty exhaust temperature sensor should be replaced or repaired
• Fix all the leakages in the pre-catalyst exhaust
• Amendments should be performed of a malfunctioning SCR controller or programming error
• Readjust the wrongly installed aftermarket or high-performance exhaust components

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade catalytic converter, pcm, oxygen sensor, def fluid, exhaust gas, catalyst system, exhaust temperature sensor, exhaust components and a lot more for our precious customers.

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

It should be noted that when if there are any SCR codes present, they should be treated before you attempt to diagnose the error code P200E. Also, before attempting to diagnose this type of a code, always repair the pre-catalyst exhaust leaks first. All you need is 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 the error code P200E. Next, you should try finding technical service bulletin (TSB) that matches the vehicle year, make/model as well as the engine size, code/s stored, and symptoms exhibited as it helps in yielding useful diagnostic information. A visual inspection should then be performed of the SCR injection system, exhaust temperature sensors, NOx sensors, and oxygen (02) sensor harnesses and connectors. Before moving onto the next step, replace or repair all the corroded or damaged wiring and or connectors. Plug in the scanner to the vehicle diagnostic connector in order to retrieve all stored codes and important freeze frame data. We advise you to write this information down before clearing the codes and test driving the vehicle until the PCM either enters readiness mode or the code is reappears.

The code is an intermittent one and quite challenging to diagnose (at this time), if the PCM enters readiness mode. In such cases, the circumstances that contributed to the code being stored may need to worsen before a precise diagnosis can be made. And if the code resets, the source of vehicle information should be searched to attain diagnostic flow charts, connector pin out charts, connector face views as well as component testing procedures and specifications. All this information extracted will be needed to complete the next step of the diagnosis. The infrared thermometer should be employed to gather the actual pre and post catalyst temperatures.

The data from the scanner stream should be observed to compare the actual results with the information found on the scanner data display screen. Next, compare the exhaust temperature sensor data between the engine banks. If exhaust temperature abnormalities are identified, probe the respective sensor/s using the DVOM. Also, the sensors that fail to match with manufacturer specifications, should be considered damaged. After that, if all sensors and circuitry appear to be operating in order, suspect that the catalyst element is malfunctioning. In such a case, a failed SCR system should also be suspected. Ensure that the DEF reservoir is filled with the correct fluid and the SCR system is functioning as per the requirements.

Common Mistakes When Diagnosing the P200E Code

Here we have listed a few common mistakes that should be avoided while diagnosing the error code P200E:

• An inoperative catalytic converter
• A distorted oxygen sensor

P200F - Catalyst System Over Temperature Bank 2