P2043 OBD Error Code: Problem & Solutions

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Check engine light flashing? Don’t know what to do? Well, Parts Avatar has a solution! Here’s all you need to know about the error code P2043. This OBD-II code P2043 is also known as a reductant temperature sensor circuit range/performance. It is notable that the diesel exhaust fluid (DEF) is utilized while converting the remaining exhaust particles to noxious gases. An increased temperature is required to burn off these particles. When the DEF fluid is injected into the exhaust stream, it brings the diesel particulate filter (DPF) up to the temperature. Only then the system is able to alter the dangerous NOx to nitrogen, carbon dioxide and water. Further reductant catalyst (SRC) is added to decrease the NOx present in the exhaust stream. The engine computer (PCM) informs the reductant temperature sensor about the temperature present in the DEF tank. Whenever an improbable signal is detected from the reductant temperature sensor, the code P2043 is stored.

The pickup tube for reductant pump module, an electric heating element, a reductant temperature sensor and an electrode type level sensor constitute the reductant heater and sender assembly. One can directly locate the heating element above the pickup tubes inlet filter. Whenever the diesel exhaust fluid temperature drops to the freezing point of 12°F (-11°C) and is identified by the reductant temperature sensor, the PCM commands the glow plug control module to supply voltage to heating element. Then the heating element melts the liquid reductant within reductant heater and sender assembly reservoir during cold ambient temperatures.

What causes this problem with the Reductant Temperature Sensor Circuit Range/Performance ?

• All the defective wiring or connectors linked to the exhaust temperature sensor
• Malfunctioning exhaust temperature sensor
• Installation of an aftermarket exhaust system’ failure to match the manufacturer’s specifications
• Powertrain control module failure
• Presence of a large exhaust leak upstream of the exhaust temperature sensor 

1. Electrical connectors - Is your car engine light still flashing ON even after resetting or your car engine is turning off without a reason? Then these are some common symptoms signalling at damaged electrical connectors. Change or repair now!
2. Exhaust gas temperature sensor - Did you just face sudden engine stalling without any obvious reason? Well, then without wasting time you should get your exhaust gas temperature sensor repaired or replaced as it is an indication that there are some issues in the system’ exhaust gas temperature sensor. Don’t waste time and get it replaced or else P2043 code can turn up.
3. Catalytic converter - A malfunctioning catalytic converter can lead to overheating and show signs of failing when the engine misfires. So it is very important to change your malfunctioning auto part immediately.
4. Powertrain control module - The powertrain control module installed in the system functions as the primary computer system in an automobile’s mechanism. It is in charge of all the constituents as well as the functions performed by them. Playing such an essential role in the operation of all the parts means that any fault in it will affect almost every part and function of the car. Visit us today!
5. Diesel exhaust fluid pump - Now get your error code P2043 solved immediately by simply changing or repairing your diesel exhaust fluid pump as it can also affect the overall drivability of the vehicle.
6. Exhaust system parts - Facing the error code P2043? Inferior quality exhaust system parts can always be hazardous for the system also it is one of the primal causes behind the occurring of the error code P2043. Tune into Parts Avatar for supreme quality exhaust system parts at economical prices.
7. Diesel particulate filter - Having problems with the diesel particulate filter? Automatic stop-start system not functioning? Don’t you worry, Parts Avatar has it all. A jammed or defective diesel particulate filter should be changed or repaired as soon as possible.

Willing to know some common symptoms of OBD code P2043? Your wish is our demand. Have a look at them below:

Common Symptoms

• Black smoke emitting out of the exhaust (during start up)
• An illuminated check engine light
• Excessive black smoke emissions upon accelerations
• Also, other than these the driver may not notice any obvious signs apart from the codes stored

We have listed out so ways which would help you to correct the occurrence of OBD Code P2043. They are mentioned here as follows:

• Repair or replace all the defective wiring or connectors that are linked with the exhaust temperature sensor
• A damaged exhaust temperature sensor should be repaired or replaced
• Fix the exhaust leakages
• An aftermarket exhaust system should be changed or restored with the factory exhaust system
• Amendments should be performed to fix the faulty powertrain control module

There is no need to get strained if your OBD code is still flashing up as we are here at your service. Have a look at our superior variety of connection,def,catalytic converter,pcm,temperature sensor,exhaust system,diesel particulate filter and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

Firstly, in order to diagnose the code, the technician should begin the procedure by performing a thorough visual inspection of the exhaust system. Next the exhaust temperature sensor should be located too. Now that you have located the sensor, the technician should ensure all the wirings and connectors are functioning in order. If they are found to working correctly, perform a test of the sensor using the manufacturer’ guide to ensure its proper working. After the test, a smoke test should be performed to check for any exhaust leaks present in the system. If no problems are found, the PCM should then be checked. If any defects are found during this verification, repairs should be performed immediately.

Common Mistakes When Diagnosing the P2043 Code

Here we have listed a few common mistakes that should be avoided while diagnosing the error code P2043:

Well, the most common mistake committed while performing the diagnosis is repairing or replacing the oxygen sensor instead of replacing the exhaust temperature sensor. One should be careful as these are two different sensors. It is essential to locate the correct the sensor for diagnosis.